FritzBox! 6591 losing Internet connection frequently

[sinumo]

Hello all,

Since 2 weeks ago I started having frequent problems with my FritzBox! 6591 router. I lose Internet connection both on WiFi and LAN and I have to unplug and plug the router again to fix the issue. In the beginning, I had to do this once a day, now it happens twice or even thrice in the day.

Sometimes the data led will flash red, but not necessarily. 

Thank you,

Luis