Good questions - other devices run the app on the same wifi with the same reader, no issue. The same device runs the app on the home wifi, no issue. All permissions are enabled, all updates installed, the device in question is an iPad that was new in the box at the beginning of the year.

It's one specific circumstance, that happens to significantly hamper business, where the iPad, the app, the reader, the wifi, and the server, all of which work perfectly fine in every other configuration, don't want to play nice. 

There was a nasty ice storm that knocked out power, before which this was all working together, but precisely because we've troubleshot everything we can think of from our end and the iPad was never at risk of a surge, I can't imagine that caused a surgically precise file corruption on the device. The modem was hooked up to power, so I suppose it's possible there, but again, all other functionality is present.

Thanks again!

@Ajferguson can you determine the device in question is compatible with Square? I know it's an iPad, so it probably is - but I'd still love to confirm. 

Again, it not only works at home, it used to work at the barbershop for the roughly three months that had passed since it's purchase, so while I hadn't seen that page before, and I don't have the exact model in front of me (I'm trying to resolve this for my dad, who actually has the iPad), I have to conclude the answer is yes it is compatible with Square.

I'll double check when it's convenient that the particular gen/model are explicitly listed as compatible per the link there, but let's assume I'm on the money - what's the next possibility we might address?

Please give our Support Team a call as they may be able to troubleshoot further.

If that doesn't work, please circle back to this thread with the following:

1) Exact make and model of the device.

2) A screenshot of the error message. 

3) The iOS version you're running on the iPad. 

Thank you and so sorry about this! ✨