problems with the app after iOS updates

[Cribbenj]

My phone recognizes the square device. But the card reader does not work. I had the same problem 2 years ago after an iOS update. Info at the top of the screen ( time wifi signal strength) change from black to grey. I have uninstalled and reinstalled the app. Worked with AT&T to no avail. Any help would be appreciated 

[EJ_]

Hello!

Which Square Reader were you using?

Here are a few troubleshooting pages that might help out:

-Square Magnetic Stripe Reader

-Square Chip Card Reader

-Square Contactless and Chip Card Reader

Hopefully something from these articles resolves it for you, but if not let me know and we can try to figure it out together.