OpenFire Meetings Problems

Hello. I restarted my server and OpenFire meetings section dissapeared. Althoigh the plugins were still there.
I tried to delete plugins, but their deletion did not remove server properties (i think it should have), so i tried to remove some of them manually. And then tried to reinstall plugins, hoping that this will set properties and everything else again. unfortunatelly nothing has changes after reinstallation of plugins, the Meetings section is still not there and nothing works.
Any help please?

Is there any other way to communicate via XMPP with voice/audio peer to peer/MUC, or is this the ONLY way? ;/