Just in case anyone still has issues with not being able to use Addtoany to share on their mobile site/app (still doesn’t work for me) I figured I’d share a great solution. Takes a little extra manual work to set up, but it gets the job done.
I’ve created a page in the forum_app named “sharing_buttons” if you need the resource. Each button is set to share Bubble’s homepage by default: https://bubble.io/page?type=page&name=sharing_buttons&id=forum_app&tab=tabs-1
Run mode version to test on your phone: https://bubble.io/site/forum_app/version-test/sharing_buttons
Hope this helps someone! Let me know if you have any questions!