usually you need either a static public IP or DDNS domain and dynamic public IP, but if your static IP would suddenly change - you will be ok.
That’s a problem, seems something is blocking access to it (we do not block IPs not related to OFAC), communication with other nodes would not help, if either your node cannot connect satellites and other Storj services or the satellite cannot connect your node - your node will not be suggested to the customers.
So I believe you have only one option - is to use VPN with port forwarding feature or something like this:
It’s also possible to add real IPs of our services to the hosts file and maybe it could help to evade blocking.