@ArcherC8 Same result, still no success. I've now contacted the support. Thank you very much anyway!

@ArcherC8 But holding down the reset button doesn't seem to do anything. Even for a very long duration. Should I try a 30 30 30 hard reset?

I've been using this router now for nearly 2 years and never had a problem. But after returning from my holidays and switching it on again, it's defnitely not working properly: The only thing that...