What does the group not available mean?

Question

Messengers

Today, when I tried to write to one of the telegram chats, the group disappeared from the list and the following message appeared:

These are technical problems, did something happen to the group (for example, it was closed) or was I banned from it?

Answer 1

Group deleted

Answer 2

I have a similar situation. Although I know there is a group. From another account everything is ok.

Answer 3

He was banned there, the group has not been deleted