No internet access on Pixel connected to RBS20

Dear community,

I have a RBR20 and 2 RBS20 satellites all on latest firmware 2.7.3.22.

My setup has been working fine for many months now, but I realized last week that I had a new problem. My Google Pixel 5 phone was not connected to wifi anymore in the living room where I have one of the satelites. While digging deeper, I can see that the phone is actually connected to the satelite with a very strong signal, but it detects that there is "no internet access", hence my phone reverting to 4G.

The problem is that many other devices are connected to the satelite, and they do have internet access. The problem is therefore clearly between my phone and this satelite (works fine with the other satelite or the main router).

Any ideas ? I'd rather avoid a factory reset of my phone or the satelite if possible.

I tried gorgetting the wifi and recreating it, but no luck there.

Thanks

Alex