Update API not Working

Hi

the Update seems not to work anymore.

dig @ns1.dynv6.com myzone.dynv6.net +short

87.65.43.21

curl https://dynv6.com/api/update?zone=myzone.dynv6.net&token=mytoken&ip4=12.34.56.78

addresses unchanged

dig @ns1.dynv6.com myzone.dynv6.net +short

87.65.43.21

:confused:
what may be wrong here?