samsung – Cannot scan QR code for WhatsApp web even when mobile data only

I am on the very last version of WhatsApp for Android: it can’t no longer connect to WhatsApp Web (it worked fine for ages)

I tried all older tricks found in this forum: mobile data only(no wifi), rotate QR code by 90°, clean up camera lens, etc. Nothing works

Does anybody have this issue as well? What else should I try ?

My phone is a Samsung S10 (patched to very last firmware & Android)

Thanks for your help!