A lot of errors/issues. Please wait some reply from the support staff.

@itsupport Open a new topic. Do not hijack an other guy's topic.

Blank pages .... Enable WP debug to see and solve your issues

Enable standard WP debug and post here the results.

@clbtiengducvietduc At the end of the page using the dropdown, you will get whatever version you need

@itsupport That is strange, with php 8.+ there should not be any such issue.

@danniee Ok, then, a URL to check me and @robert would be nice and helful, if you can of cource.

Nope, this is against wpForo instructions and (almost) nobody use page caching plugins with wpForo. There is even a one-time WARNING about this in y...

@danniee What do you mean? Are you using a caching plugin?

What is your PHP version?

Tested that and there is no such issue. Probably you have some caching and caching is a no-go for wpForo.

No caching for wpForo, PAGE caching or else. The reason is simple. NO CACHING plugin or server plugin "understands" wpForo. wpForo has its own ecosy...

OF COURCE NOT. NO CACHING for wpForo, the whole of it. wpForo has its own internal caching. Please do not give such advices.

Here are newer suggestions from @robert

@percysgrowroom It would be very useful to install somekind of realtime visitors viewer, so you can see what is going on on your site. Also Wordfenc...