DNS Server issues 45.90.30.190

Good luck with that, I'm waiting for a reply since 27/jan. It seams that everybody left the ship. https://help.nextdns.io/t/y4yl5tb

That being said, you can try to force the usage of other servers instead of the anycast ones.
Take a look at
https://help.nextdns.io/t/h7hkyw2 or
https://help.nextdns.io/t/p8h0g23?r=83h0w4t
on how-to force a especific server, from those listed on ping ou diag.

You can prepend those names with ipv4- or ipv6- to force the usage of IPv4 or IPv6, respectivily, as stated in https://help.nextdns.io/t/60htdz3 (but don't follow that solution, just take a look on the naming conventions).

Kind regards,
Rodrigo