Move a subject and problem with addons Advanced Attachments
Please navigate to Dashboard > Forums > Settings > Features admin page, make sure the HTML Cache is disabled.
Please let us know are you using caches plugins? If yes, please exclude the wpForo page from this plugin.
You use "o2switch PowerBoost" webserver and that _could_ have some caching. I have no idea what "o2switch PowerBoost" actually is.
btw: you have right now TWO SEO instances in wpForo page. Remove Yoast from wpForo base page.
o2switch is my server host.
I deleted Yoast SEO because it made me lag my website.
I noticed that even when I'm writing a message, when I go back to the forum homepage, I see an unread message notification on my own message
thank you !