Open hidden messages on my iPhone and my Facebook account on my wife page

Hi cristen17,

Thanks for contacting Apple Support Communities!

It sounds like you need help with Facebook, correct?

Since Facebook isn't an app developed by Apple, we'd suggest that you contact the app developer directly for help with their app. If you need help to locate their contact information, you can reference this link: How to contact an app developer - Apple Support

"Contact the developer of an iOS, iPadOS, or watchOS app

1. Open the App Store on your iPhone or iPad.
2. 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.
3. 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."

Take care!