Dear team,
I'm newbie on DYNU services
For me not is clear how to update my domain and subdomain wit my Fritz.box router.
After one day of use only my domain IP was update, not subdomain.

This is the string of config in may router as your info:
https://www.dynu.com/DynamicDNS/IPUpdateClient/Fritzbox
http://api.dynu.com/nic/update?username=myusername&hostname=example.com&password=mystrongpassword
With this config only my domain was update
I tried this config with group of domain
http://api.dynu.com/nic/update?username=myusername&mygroup&password=mygroupstrongpassword
also with no success
Where is my mistake?
Thanks NM