Why when new themes are added does not show, you need to press CTRL+F5 what was updated, what is the problem?
@dimalifragis I deleted all plugins, it is not updated from the computer either, so try to create a topic on the forum. loghin : firstname.lastname@example.org pass: 525712
If the issue is with topics/posts also, then it is definitely a caching issue somewhere. Ask your hoster about it.