Went to wireguard irc chat and they told me the error I get has something to do with my side of things and not wireguard itself. I’m not very savvy with this stuff, so if anyone has any input it would be greatly appreciated.
Jun 27 14:53:15 Pi4 wg-quick[5694]: [#] ip -6 address add fc00:bbbb:bbbb:bb01::3:93e6/128 dev us-nyc-wg-605
Jun 27 14:53:15 Pi4 wg-quick[5708]: RTNETLINK answers: Permission denied
So it tries to assign an IPv6 adress, but for some reason it fails. Whatever is the reason, I found similiar problems, and the fix was to add some lines in /etc/sysctl.conf, but in /etc/sysctl.d/dietpi-disable_ipv6.conf we have this already, so I think you just need to disable IPv6 with dietpi-config.
Ipv6 is already disabled 
