Hi Matt,
the keyserver should be empty to use the default, which in current GnuPG is
‘https://keyserver.ubuntu.com’
Did you have Gpg4win installed before? This could be the reason why there is the old keyserver.
To use an even more modern one, see https://social.tchncs.de/@ber/107008659842900171
for the emerging new network of pubkeyservers.
Regards
Bernhard