MarsSeed [1] filed a deletion request for python-domain-connect-dyndns [2]:
Dead on Python 3.13. Upstream is unmaintained since 2022. [a] [a]: http://github.com/Domain-Connect/DomainConnectDDNS-Python [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-domain-connect-dyndns/