We have developed and published a Zoom App that can be used for both meetings and webinars.
This app works fine if we send an invitation to it to a participant who is attending a meeting on a PC.
For mobile compatibility, we enabled Mobile Client from the Zoom App Marketplace settings and invited participants who joined the meeting on mobile to use the app, which worked fine as well.
On the other hand, when the invitation is made in a webinar, the participant is not notified and the app is not available.
This test was performed on multiple Android devices, none of which worked; however, it worked when the participant joined the webinar from a PC.
Can you please tell us how to activate the app for participants attending the webinar from their mobile devices?