Catch 22 with apple store

iPad Pro 10.5” tops out at iPadOS 17, which should work with the App Store.

Details: iPad Pro (10.5-inch) - Technical Specifications - Apple Support

Does Settings > General > Software Update show an update to 17.7.10? If so, apply it.

Does the App Store app show any updates for the apple Store app? If so, load the Apple Store app update.

If both are now current, try the Apple Store app again.

Search for and purchase your refurbished iPad online here using Safari.

Refurbished iPad Deals - Apple

garyfromnewburgh wrote:

I am at 17.7.10

There is a note on Apple Store update saying requires 18.0 or above, but not valid for my Ipad. Thus my dilemma.

Then you’re going to need to use Safari, or the phone.

You can purchase a new iPad at Apple.com or from an apple authorized reseller.

garyfromnewburgh wrote:

Reburbished?

Of course. Certified Refurbished Products - Apple