Upgrade iPad Air to 13.5
In order to get App I was asked to upgrade to 13.5 how do I get that.
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Hi Stingray1212, based on the model of iPad you have listed (iPad Air) and noting that if it is not the iPad Air 2, then it is likely you cannot upgrade your iPad to get the App you are wanting.
The following link will show you what IOS you can upgrade to and indicates that it can only be upgraded to IOS12.5.5.