UR22C won't work with Webex

Hello, I’m a violin teacher. Yesterday I bought a UR22C so I can connect it to my iPad Pro and use it for online lessons with my students while their presence because of the pandemic is not possible. One of the main reasons I bought it was the Loopback feature.

Any way I use two main apps for this, Zoom and Webex. I won’t bother you with zoom as everything works as expected. On the other hand Webex won’t recognize UR22C and connects through iPad’s microphones and speakers. At that point the logic says that it’s Webex’s problem but my second audio interface focusrite 2i2 (using this on Mac) work’s fine with Webex app in iPad.

I asked a friend to try his UR22mkII, he said that Webex won’t recognize it.

Is there any way it can be fixed?

Thank you for your time.