Hello there

Recently i have issue with my VR2100v EU V1 with VoIP.

Suddenly one day VoIP stopped working.
My VoIP login info and other VoIP stuff is correct as i tryed it on FritzFiber 5530.

However the main problem isnt VoIP settings but VoiP connection itself wich requires to tag VLAN ID 101 with Dynamic IP setting.
One day it stopped getting IP and now states that IP that it got offerd from ISP DHCP server is in use.
I tryed older firmware,disableing/enableing other stuff and cant find any fix to the problem?