I used to have the same issue on PC/NA - getting kicked for no reason with the message claiming that I was spamming, even though I wasn't chatting. The only thing which "fixed" it is running in offline mode. I figured people were spamming me with hate tells and getting me kicked, so...no tells/whispers, no more problems.

Messaging in this context usually refers to something other than chat.

Add-ons that send too many messages to the server at once can cause it on PC.

Whether add-ons are used or not, if the server or the connection is experiencing issues where all of your commands are lagging and then suddenly hit the server all at once, that can cause this response too. Those are all considered “messaging.”

If you are doing something like crafting , clicking a button or something like that when the server is stuttering , it thinks you're spamming and will boot ya . Did it to me earlier