Work VPN not working over Mobile Hotspot

[robust_blanket]

I have the Rogers Infinite Plan, when using mobile hotspot, I cannot establish a VPN session for my work. It goes through the first phase of two-factor-authentication, but it fails to make the final connection. 
I'm using an iPhone 13 Pro Max. Other sites are accessible on hotspot.

I've checked with my work's IT department and they've confirmed that it's an issue with my host network, it connects fine over home internet.

[RogersMoin]

Hello, @robust_blanket.

We're delighted you joined our Community. Your work VPN not working over the mobile hotspot can be worrisome. Had it worked before?

I couldn't replicate the issue; I can connect to the work VPN over the mobile hotspot.

You may want to try Reset Network Settings by going to Settings > General > Reset > Reset Network Settings. This also resets Wi-Fi network passwords and cellular settings you've used.

Please keep us posted.

Cheers,
RogersMoin