So i finally figured it out. There must be a bug in the arlo web ui, as I tried several times to allow extra rights there, but it never worked. Back in the arlo app I see it was not set. Once set from the app I could add the base station.
However, I am hesitant that a third party app like this one should need the extra rights in my arlo account. It would be preferable if this was not needed, and could be a deal breaker for many I think.
