How does banishment work

Me and my friends where having fun then for some reason they banished me, maybe as some joke? Maybe I don’t know. But am I unable to play the game now?

Here’s a description: How Banishment and Banish Points work / 追放と追放ポイントの仕組み
There has already been lots written about banishment. Please use the search function to find the information you are looking for. No need to create a new topic to ask for info that is already there, ok?