We've got several IOS and Android app live through the app store from Creator. 

They've all worked fine up until the most recent version done a few days ago, the IOS app was re-codesigned and uploaded to the app store, approved by Apple and made live. This now appears with only a blank screen when a user clicks on it.

Some slightly older devices seem to work fine with the newest version of the app when it's downloaded for the first time onto the device, however any devices which have previously had the app on their device or updated to the new version are met with the blank screen.

The web portal and Android version work as intended.

Zoho Creator support team are looking at it, and I've also got an external developer looking at it, both with access to our Creator account and IOS account, no luck so far.

We thought it might be an IOS certificate / profile / App ID issue so they've all been refreshed and followed the instructions exactly, even 

Does anyone have any ideas about what the issue might be??

Thanks very much