IOS Upgrade

I recently updated the iPad OS on my iPad Air 2 to version 14.6. Now, my recipe app doesn’t work and I’m afraid I’ve lost all of my recipes. Is there a way to downgrade my OS so it can read the app?

As far as I know, Apple has stopped allowing ios users to downgrade to older softwares after I believe ios (or in this case IPADOS ) 12 or 13. Is the recipe app one you developed yourself of a app you downloaded off the app store?

IOS Upgrade
 
 
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