meihuak If I recall correctly, the 'Private Forum Facade' extension adds a dedicated login and registration interface, allowing you to hide the forum from guests entirely if desired.
On the other hand, 'FoF Direct Links' lets you link directly to the registration modal—perfect for sharing a sign-up link on social media, for example. However, instead of creating a standalone registration page, it simply triggers the registration modal to open on the homepage.
Essentially, if you want a dedicated registration page, you'll need Private Forum Facade; but if you only need a direct registration link, I would definitely suggest 'FoF Direct Links'.
Also, I've just tested it and can confirm the incompatibility issue mentioned by KBExit. It’s likely a bug that will be fixed soon, as the extension's codebase appears to be compatible.