Forum styling/template gone!

For some unknown reason my Forum styling has gone and no longer uses the template. Please see attached

Try cleaning your cache file in the file manager section of your cpanel.

Thanks again! Where would I be without you. It's fine now

LOL I spoke to soon. Whenever I'm logged in the Forum displays fine but upon logging out it doesn't! I checked the membership levels and Forum is set to public read! Any ideas?

Try going back to admin and recompile languages in forums and templates.

I did that but it still wouldn't work. As a temporary workaround I made the forum menu block only visible to signed in members.

I only have a few issues to solve and the site will be fine

Regards

Toni