Home Internet - Port Forwarding not working

Chris,

I was offered T-Mobile Home Internet Friday evening. The sales rep was very nice but could not answer some of my pressing questions. I understand as she wasn't trained at that level. I would prefer bridge mode for the gateway. I was told Sunday by Tech Support the Gen 1 gateways do not support. It is "rumored" that the next gen will support bridge mode but no confirm rumor or expected date. I access a single board controller and Node-Red from the outside now with a land DSL service. No problems there but T-Mobile is much faster at a lower cost if I change to VOIP. Tech Support told me they could not give me a static public IP as I have now. My after the sale research shows that LTE type Internet doesn't work the same and that's not going to happen. Even with a static public DHCP and a DDNS it looks like double NAT'ing is the only remote possible option. The bottom line is I need to be able to log into my Raspberry Pi and Node-Red port from anywhere. It looks like even with bridge mode the lack of an IP address I am still out of luck. I would not be so terribly opposed to a DDNS service but search engine research indicates this is not possible with T-Mobile LTE Home Internet. l I just don't think this is prime time unless unless you want to play on social media and check email. Please tell me I'm missing something. Regards, Alvin