BarCode Scan option not showing

Client advised he has completed the installation of the app which contains scannable fields but he doesn’t see the scan option although I can see it on my phone (Samsung Galaxy S9)

Is there something we’re missing? Never had anyone not see the option in the past.

He’s on a Samsung Galaxy S8

it’s probably a long shot here, but any chance his S8 has “camera permissions denied”? e.g. https://www.androidexplained.com/galaxy-s8-app-permissions/

Got it. Thinking the same but he says he’s already checked that. I’ll send this his way. Thanks!