VPN (SonicWall) will not connect over T-mobile 5G Hotspot

I'm experiencing the exact same issue with my Samsung A32 5G. Just activated this phone last Friday and tried to connect to my work VPN over the hotspot and it's just left to "Connecting". I tried troubleshooting based on internet suggestions to change the mobile network away from 5G so either (a) LTE/3G/2G or (b) LTE/3G but experienced the same issue. I moved the SIM card to my previous Oneplus 6T and it is working. That is my current workaround but this is seriously an issue that T-Mobile needs to look into and fix. So now I have to carry 2 phones just in case I need to work and access my work file network.