Refrigerator light blinking

The 4 fridge fuses are 2.1.1, 2.1.2,2.3.1,2.3.2, but you can also lift the entire socket (white in your pic) where the Wago plug is inserted to see if this one did not loose the connection with the panel. I had this problem with the anchor which did not engage despite the fuse was fine.

Looking at this photo again and referencing Marcella's comment I notice that, one of the fuse sockets is unpopulated. I'm not sure exactly how the circuit behaves. But given that one switch is controlling 4 outputs I guess the unpopulated socket may be sensed as a blown fuse. I'll try to add a fuse in there and see if that fixes it.

All lights blinking? Could be something related to low battety voltage. Did you notice the voltage on the top display? I had something like that while swapping original AGMs to lithium. Not necessarily the batteries were low, but after multiple ons and offs I made the system confused. I think there is also a capacitor somewhere which keeps the currents running even when batteries are completely dead, which will also need time to be charged again. I didnt get into all the details of it, but if everything is back working, I wouldnt bother.