So here's the log:
[2019-06-27 12:24:40] production.ERROR: Swift_TransportException: Connection could not be established with host smtp.wvbforum.xyz [Connection timed out #110] in /www/wwwroot/forum.wvbforum.xyz/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php:269
Stack trace:
#0 /www/wwwroot/forum.wvbforum.xyz/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php(58): Swift_Transport_StreamBuffer->establishSocketConnection()
#1 /www/wwwroot/forum.wvbforum.xyz/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(143): Swift_Transport_StreamBuffer->initialize(Array)
#2 /www/wwwroot/forum.wvbforum.xyz/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mailer.php(65): Swift_Transport_AbstractSmtpTransport->start()
#3 /www/wwwroot/forum.wvbforum.xyz/vendor/illuminate/mail/Mailer.php(451): Swift_Mailer->send(Object(Swift_Message), Array)
#4 /www/wwwroot/forum.wvbforum.xyz/vendor/illuminate/mail/Mailer.php(235): Illuminate\Mail\Mailer->sendSwiftMessage(Object(Swift_Message))
#5 /www/wwwroot/forum.wvbforum.xyz/vendor/illuminate/mail/Mailer.php(159): Illuminate\Mail\Mailer->send(NULL, Array, Object(Closure))
#6 /www/wwwroot/forum.wvbforum.xyz/vendor/flarum/core/src/Api/Controller/SendConfirmationEmailController.php(93): Illuminate\Mail\Mailer->raw('\xE4\xBD\xA0\xE5\xA5\xBD\xEF\xBC\x8Ctestac...', Object(Closure))
#7 /www/wwwroot/forum.wvbforum.xyz/vendor/flarum/core/src/Http/RouteHandlerFactory.php(40): Flarum\Api\Controller\SendConfirmationEmailController->handle(Object(Zend\Diactoros\ServerRequest))
#8 /www/wwwroot/forum.wvbforum.xyz/vendor/flarum/core/src/Http/Middleware/DispatchRoute.php(67): Flarum\Http\RouteHandlerFactory->Flarum\Http\{closure}(Object(Zend\Diactoros\ServerRequest), Array)
#9 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Flarum\Http\Middleware\DispatchRoute->process(Object(Zend\Diactoros\ServerRequest), Object(Closure))
#10 /www/wwwroot/forum.wvbforum.xyz/vendor/reflar/stopforumspam/src/Middleware/RegisterMiddleware.php(75): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#11 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Reflar\Stopforumspam\middleware\RegisterMiddleware->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#12 /www/wwwroot/forum.wvbforum.xyz/vendor/flagrow/terms/src/Middlewares/RegisterMiddleware.php(59): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#13 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Flagrow\Terms\Middlewares\RegisterMiddleware->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#14 /www/wwwroot/forum.wvbforum.xyz/vendor/flarum/core/src/Http/Middleware/SetLocale.php(51): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#15 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Flarum\Http\Middleware\SetLocale->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#16 /www/wwwroot/forum.wvbforum.xyz/vendor/flarum/core/src/Http/Middleware/AuthenticateWithHeader.php(55): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#17 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Flarum\Http\Middleware\AuthenticateWithHeader->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#18 /www/wwwroot/forum.wvbforum.xyz/vendor/flarum/core/src/Http/Middleware/AuthenticateWithSession.php(34): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#19 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Flarum\Http\Middleware\AuthenticateWithSession->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#20 /www/wwwroot/forum.wvbforum.xyz/vendor/flarum/core/src/Http/Middleware/RememberFromCookie.php(52): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#21 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Flarum\Http\Middleware\RememberFromCookie->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#22 /www/wwwroot/forum.wvbforum.xyz/vendor/flarum/core/src/Http/Middleware/StartSession.php(62): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#23 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Flarum\Http\Middleware\StartSession->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#24 /www/wwwroot/forum.wvbforum.xyz/vendor/flarum/core/src/Api/Middleware/FakeHttpMethods.php(31): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#25 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Flarum\Api\Middleware\FakeHttpMethods->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#26 /www/wwwroot/forum.wvbforum.xyz/vendor/flarum/core/src/Http/Middleware/ParseJsonBody.php(29): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#27 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Flarum\Http\Middleware\ParseJsonBody->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#28 /www/wwwroot/forum.wvbforum.xyz/vendor/flarum/core/src/Api/Middleware/HandleErrors.php(42): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#29 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Flarum\Api\Middleware\HandleErrors->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#30 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/MiddlewarePipe.php(83): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#31 /www/wwwroot/forum.wvbforum.xyz/vendor/middlewares/request-handler/src/RequestHandler.php(84): Zend\Stratigility\MiddlewarePipe->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#32 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Middlewares\RequestHandler->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#33 /www/wwwroot/forum.wvbforum.xyz/vendor/middlewares/base-path-router/src/BasePathRouter.php(97): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#34 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Middlewares\BasePathRouter->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#35 /www/wwwroot/forum.wvbforum.xyz/vendor/middlewares/base-path/src/BasePath.php(53): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#36 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/Next.php(52): Middlewares\BasePath->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\Next))
#37 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/MiddlewarePipe.php(83): Zend\Stratigility\Next->handle(Object(Zend\Diactoros\ServerRequest))
#38 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-stratigility/src/MiddlewarePipe.php(72): Zend\Stratigility\MiddlewarePipe->process(Object(Zend\Diactoros\ServerRequest), Object(Zend\Stratigility\EmptyPipelineHandler))
#39 /www/wwwroot/forum.wvbforum.xyz/vendor/zendframework/zend-httphandlerrunner/src/RequestHandlerRunner.php(95): Zend\Stratigility\MiddlewarePipe->handle(Object(Zend\Diactoros\ServerRequest))
#40 /www/wwwroot/forum.wvbforum.xyz/vendor/flarum/core/src/Http/Server.php(46): Zend\HttpHandlerRunner\RequestHandlerRunner->run()
#41 /www/wwwroot/forum.wvbforum.xyz/public/index.php(22): Flarum\Http\Server->listen()
#42 {main}
Any ideas? Really appriciate for you guys' help.
If you need this email account, just email me at [removed].
Thank you so much.