IVPN and AirVPN wireguard working only if i connect to them first via LTE

Hi, i have this weird issue where both my IVPN and my AirVPN connection works only if i do the following:

Disabile WiFi Connect to LTE and open either IVPN or AirVPN Connect to wireguard protocol Enable WiFi and Connect to it Disabile LTE

Now it works

If i try to connect to wireguard protocol from WiFi directly (corporate WiFi) it doesnt work

Any idea why?

If i Connect from my home WiFi it works normally

Thanks