I just went through this process and I think I can help. This Presonus support document covers hardware compatibility with IOS devices.
https://support.presonus.com/hc/en-us/articles/360059975732-PreSonus-Hardware-iOS-iPadOS-Compatibility
The critical bit is that you need an Apple lightning-to-USB-3 adapter. This is different from the standard Apple USB camera adapter in one important way: it adds a power input port. The standard USB port connects to your Presonus device. For power, the input is USB-C port, so you need the right cable. This cable would go from your AC power block, into the USB-C port.
Then, you plug the lightning end of the adapter into your IOS device. Power is then passed from the adapter directly to your Presonus Audiobox USB, instead of trying to pull it from the iPAd, which doesn't provide enough power.
BUT there is one thing to note, and the support document doesn't tell you this: you won't be able to use Studio One software. It's not available as an iOS app, and of course you won't have any access to it on your PC. Your Audiobox will function as a basic interface, and the only controls you'll have are on the box itself. (Presonus does have iOS apps, but none of them apply here.)
I confirmed this info with Presonus Tech Support.