Hi Rwang96,
We appreciate you reaching out to us. We understand that you are experiencing issues using WeChat after installing iOS 16.2.2.
For accuracy, are you using iOS 16.1.2, or do you really mean iOS 16.2.2?
If you are using iOS 16.1.2 and WeChat is the only affected app, please reach out to their app developer.
WeChat's app developer is in a better position to provide further assistance.
How to contact an app developer
If you’re having any issues using the public beta, we welcome your feedback here: Apple Beta Software Program
If you’re using a Developer account you can find answers to many questions here: Apple Developer Forums
Take care!