Hi! Thank you so much for your response. Shame on me, it's rather not intended to use more than one message system plugin. Thank you, it works now! The "bubble messages" from that pluign you've mentioned is sadly for MV only. Sooo....Yeah, I think I need to give up on something.
Viewing post in Error, help please?
Probably via Fossil plugin, it's said there: https://forums.rpgmakerweb.com/index.php?threads/balloon-message-dialogue-for-mz...
But I don't want to use Fossil. Thank you anyway for your help!