Rak Hotspot V2 Miner - ddns setup?


my internet provider does not provide a static ipv4 adress and changes it over night. Can I somehow provide my ddns adress instead of a static ipv4 adress, so that my miner can always be found by the helium network?
By the way:
Port Access status: unreachable
Suppl. Info:
Status: online
How can this be? The Ports are opened for the helium miner.

Best regards,

who is your internet service provider?