Books not showing on android phone app

I have a new phone, and none of my books are showing up on it. I can still see them on my phone.

Both phone and computer are authorised with the same email.  I've tried all the suggested troubleshooting - the date is right, doesn't seem to be a firewall problem, I've tried connecting phone and computer with a cable but the phone doesn't show up in the Digital Editions app.  So at the moment I can only read books on my home computer.