kbajori50 its not working like that: I want big forum and I ready to pay.
Flarum or another forum engine its just a way for communication. For now days its just a one of the many ways for communication. So, if you want 1-2K users, you must have it in the wild already. And forum/video channel/IM group - its just a point for concentration of this people.
My community is 2K+ users. Did you really think its cause of Flarum using? Absolutelly no. Its beacause peoples found something interesting which they can access only on one place in the Internet via http and this place using Flarum for discussion, likes, etc. And people didnt choose it. Peoples just want some needle content. If you have your main subject - and its really interesting - people will find you. If not - you are not interesting and you cant build living community.
However, you can pay just for post and peoples will love you cause they can earn and its very interesting for most peoples ๐ I think if you will pay 1$ for each post.. Very soon your community will be huge and very active ๐
PS. Of course, Flarum must be comfortable for peoples. Flarum is moderate modern engine. Its still can work like old forums but it have some progressive mechanics like infinite post loading and access via mobile application (PWA). Sometimes I am using some technics for increment users (closed posts for unregistered) and sometime contents require for Reply or Like for viewing (stimulate activity). Flarum gives me all this opportunities. But in general - your community must be interesting.
Something "interesting" is the core of your community.