Sending prints to Bambu Handy App from other services?

I’ve printed things through the app that I’ve searched for either in the app, or adding them to a collection on makerworld. But what about models that might be on printables/thingiverse/thangs etc? If I’m mobile and not convenient to get to my PC, is there any way to import them into the bambu app? I can download the prints to my icloud drive or dropbox- or I can copy the URL of the relevant pages. But can I import them into handy? Or is it limited to only models directly in makerworld?

any workarounds (mobile only ideally)?