Box2 not accepting ipv6 custom DNS for quad 9

Goros

Hi,

I have a box 2 and have been pretty happy with it.. my issue is that im attempting to configure the IPV6 DNS resolver to Quad9 and it wont recognize it in either format.

2620:fe::fe or 2620:fe:0:0:0:0:0:fe

2620:fe::9 or 2620:fe:0:0:0:0:0:9

It accepted the IPV4 without issue, but my ISP uses v6 so im trying to get it set properly.

Goros

For the record, when any of the options above are entered, the save button doesn't light up and my only choice is to delete what I entered.