Let's start with excluding the forum page from your cache plugin, i see this message in the source code of forum pages:
Page uncached by LiteSpeed Cache 4.6
Here is the instruction: https://wpforo.com/community/faq/wpforo-and-cache-plugins/
I had already done this, or is it incorrect?
Also a good idea for the whole site is to DISABLE caching for LOGGED in users.
I think this plugin doesn't work on my WP or it clashes with the theme. Not only the icons dont show, but some people cannot register and the people who did now has access to my WP dash board.
Thanks for helping