I can't connect to my University VPN

Hi everyone! I just moved to Fedora from Windows 11, and I am having troubles connecting to my university VPN. More specifically, I tried to connect by the option in network settings, the login page opens correctly on my browser, but after it asks me to insert the OTP code required, it says that the login was successful, but that it got an error from the server (512) and it doesn't connect to the vpn. I even tried looking for alternatives such as downloading an "external" program, but the only one I found that works has a 10-day free trial before it asks me to pay a subscription. How can I solve this? The protocol name should be "globalprotect-openconnect". Thank you!!