I cannot access JRiver (22.0.88) on a Mac Mini running macOS 10.12.5 from the internet via an iphone (ios 10.3.2) and JRemote 3.25. Works great when on LAN/Wifi. Put in port forwarding on the router which appears to work from the Mini (its firewall is off) with the Media Network Options test (the not reachable from the internet verbiage goes away). I see this call on the router firewall log. When I try to connect from cell with the phone I get an error message on JRemote "Could not connect, there was an error sending the request". It then retrieves the correct ip addresses (internal and external) with the access key and gives the same error. I do not see anything on the firewall log that I can identify as coming from the phone.
This is on a T-Mobile cell network and I saw the thread about issues with T-Mobile from January, but looked like this was fixed.
Any suggestions appreciated.