Hi andree194,
We appreciate you reaching out to us.
We’d like to gather additional details that may help us be in a better position to assist you.
- Have you had the chance to restart your device? Restart your iPhone - Apple Support
- Are you using the same steps below to add your Boarding Pass?
"How to add a boarding pass, ticket, or other pass to Apple Wallet on your iPhone
- Open the app, email, notification, or other communication that contains your boarding pass, ticket, or other pass.
- Tap Add to Apple Wallet.
- Follow the instructions on the screen.
- If necessary, tap Add in the upper right corner."
You can use the article below as a reference.
Add, use, and share boarding passes, tickets, and other passes in Apple Wallet - Apple Support
Also, please make sure that you are running the latest version of iOS.
While it isn't inherently assured that an update will resolve the issue, updating to the latest software version for your device can help isolate potential software issues.
Kindly secure a backup and update.
How to back up your iPhone, iPad, and iPod touch - Apple Support
Update your iPhone or iPad - Apple Support
If you are still unable to add your boarding pass, please contact the merchant or company that issued your boarding pass to make sure they support passes in the Wallet app.
Take care!