persistent wrong account suggestion on linux startup

[gericht]

I do face a problem running linux teams.
every time I start up Teams it asks me if it should change to a Guest account with an external organization I had been invited to some time ago, and which I have to use occasionally.
since a few weeks (after I had to interact by this guest account more frequently) this inconvenience popped up.
and I wonder - how to get rid of it?

[#2]

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