Chase mobile banking app not working only on one phone

Hello all,

I have an issue with the chase mobile banking application specifically isolated to my iphone.

When trying to login I get: "we're temporarily unable to connect to chase. please try again later. thanks for your patience."

At the same time, I can login on my ipad fine. mobile browser works fine. laptop login works fine.

It is like the chase application is corrupt on my phone.

deleting it and reinstalling it does not work. restarting does not work. Software update from apple does not change it. Chase app update does not change it.

If I erase all content from my phone and skip backup entirely, I can setup my phone like new, and get the application to work.

If I restore my data after from icloud, the issue returns. I am stuck between choosing to use online banking or keeping my data because there seems to be no way to fully delete this application from my phone's current software install.

Chase's response is that because its isolated to strictly my phone, it is an Apple issue. Apple's only advice so far is to completely erase my phone and start over.

Is there some kind of developer menu that would allow the full deletion of the chase app from my phone?