Version Mismatch

[MelodyEmber]

I can't join any of the ice.org servers it says 'version mismatch' what's happening? I haven't been banned that I know of, I try to follow all rules.

[iSoSyS]

Hello MelodyEmber,
openttd recently released a new version 12.0. For the time being our servers are still running version 1.11.2. If you are using steam and it upgraded automatically you can try as a workaround change which version steam uses by going to game's properties, and within "Betas" tab select "1.11.2 - 1.11.2 release".