Am I doing something stupid? (probably) Before the Key Network went it worked. This is from my house - not work - so there are no obvious firewall issues…
I exported the public key and uploaded it directly on the website and it worked. Still not sure what the issue was with gpg locally because the key looked right.
it is very likely that you are running into a problem with the TLS certificate
of the server and a peculiar way that Let’s encrypt has handled a transition.
The part of Gpg4win that is handling the keyservers: GnuPGs dirmngr
could not deal with the special cross signature.