Considering your situation, there may be a few possible issues that you might want to check. You should firstly ensure to have Google Analytics 4 properly configured in your Firebase project. You also need to link your Firebase project to your Google Analytics 4 property. Another crucial thing is you must have the latest version of the Firebase/Google Analytics SDK for your iOS app. You can refer to Firebase’s documentation for installing and configuring the SDK. After you’re set with the SDK, it remains necessary to verify whether you’re accurately logging events in your app, detailed instructions can be found again in Firebase’s documentation. I hope this guidance has been useful to get you back on track.