Hi there Tuscanyi,
You've taken some great steps already with the Messenger app on your iPad Air.
Do you have issues opening or other apps loading on your iPad Air? We want to see if this is isolated to one app on your iPad Air or multiple.
Also, does the same issue happen with multiple Wi-Fi networks? This also can help us know if the issue might be with the connection or something else.
If this issue is only happening with this specific app, you may need to reach out to the app developer for further assistance with their app. The steps below show how to do that:
"Contact the developer of an iOS, iPadOS, or watchOS app
- Open the App Store on your iPhone or iPad.
- Search for the app, then tap it. If you can't find it, tap the account button
or your photo at the top of the screen, tap Purchased, tap "Not on this [device]," then tap the app. - The app's product page appears. Scroll to the Ratings & Reviews section, then tap App Support. If you don't see App Support, make sure that you're signed in with the correct Apple ID."
That information, and more, can be found here: How to contact an app developer - Apple Support
Take care.