Since yesterday I've been unable to upload more than two product photos using the Shopify app. Everything was working fine until yesterday and nothing has changed as far as I know. I am able to select several photos from my camera roll but only two then show up for the new product. How can I fix this?
Have you checked the filesize of the images?
If even one of them is too large, it can error out the upload. Confirm the filesizes first and see if they meet requirements: https://help.shopify.com/en/manual/online-store/os/using-themes/change-the-layout/images#upload-limi...
Let me know if that helps solve your problem.
Are they all the same spec iPhone? I wonder if the the app is running out of system resources on the lower spec iPhones. Do you have spec of the three iPhones? Another things to keep in mind, is you should log out of Shopify regularly if you are uploading or editing lots of products, as Shopify can be very buggy if you don't give it a rest every 5 to 10 minutes or so (depending what you are doing and how much resources your device is taking up to carry them out).
Seems like you have taken several steps to resolve the problem. Next step would be to contact Shopify: https://help.shopify.com/en/questions?utm_campaign=Guru+Ask&utm_medium=Forum&utm_source=social#/logi...
Hopefully they can assist you, as it seems possible that there is a problem with the app.