Use Lightroom Albums with RAWs from Behance Mobile

I create Lightroom Albums from Lightroom Classic: create a new collection, sync it with Lightroom, add photos to collections (RAW format), wait a minute and the lical collection becomes an album online.

No problem here.

The album is used to create a Behance project.

When doing this from a PC I have no problem: I create a new project, I add a photo grid, I link the photo grid to a Lightroom Album, publish. Done!

Doing this from Android mobile Behance app is impossible: when choosing the Lightroom Album I get "format non supported, only jog or PNG" error.