FortiClientVPN iOS SSO for VPN version 7.2.3.0123

We have VPN setup with SSO working great on computers.

On iPhones/iPads we have tried the free FortiClientVPN version 7.2.3.0123 and it will ask for user and password then MFA.

Once MFA is entered the screen goes white and VPN will NOT connect.

We installed the paid version of FortiClient. We setup the VPN and everything works when we connect to the VPN.

When the trial expired on the paid FortiClient we uninstalled it.

We opened the free FortiClientVPN and it started working.

We took another iPhone and installed the free FortiClientVPN and it did the white screen and would not connect.

We installed the paid FortiClient setup VPN and it connected.

Uninstalled the paid version and the free FortiClientVPN started working.

My question is what is the paid version changing that makes the free version work?  Can I make that change without needing to go through the trial on the paid version?

Is this still going to work after the FortiClient gets an update?

Thanks