dynamic DNS only updating *

[meaning]

Hi everyone,

I have a little problem with dynamicDNS and I'm seeking for advices.

When my ISP leases me a new WAN IP address, Dynamic DNS ill do its job, and update the IP. No worries.

the problem is I am actually using two different DNS records in cloudflare :

1. one type A, name * -> in order to allow any subdomain to be redirected to my nginx instance.
2. another pointing to *.mydomain.com

Here is the issue, dynamic DNS only do update the first record. (*), and the other one (mydomain.com) remains stuck on the old WAN IP address.

Result -> I can't reach any of my services and do have to manualy update my IP address.

What am I doing wrong ? How do I make sure both records are been updated ? Thanks !!! :)