Connector cannot be added (simply does not appear in specific channel)

[raspberrypi]

I want to add a connector in a channel of a team (incoming webhook). The connector can be added in all teams in all channels. Only in this specific team, where it is needed, it cannot be added in any channel. It does not appear in the selection of connectors.

[#2 · Accepted solution]

I have found the solution.
In the left bar in Teams, I was able to click on the Apps button and manually add the webhook to the team there.