This Fritzbox aborts the WLAN connection. Only rarely, then more and more often. A normal surfing behavior was then after only 6 months no longer possible and meant that we bought a new router. I was sick that I times in the evening disconnect from the Fritz box then had to click "reconnect" 10.
But according to AVM support the Fritz box is fine - so that we have are now around here. Because the error can never reproduce so it can read aloud Support not be yes!
By the way we had once a AVM Fritz box 7330 - we have returned after 10 days - the same problem had occurred also in 7330 namely. Since then I say: AVM - no thanks.