Hi @oliver1438 welcome aboard, I'm here to provide you with assistance regarding your notifications concern.
Your Fitbit device can receive notifications to keep you informed, such as text messages, phone calls, and meeting alerts, when your phone is nearby. In addition to the Notifications options in the Fitbit app, you may need to modify settings specific to your phone. As it turns out, the iPhone XR is not listed at this moment as a supported device with our products and services, therefore, you may experience certain difficulties.
I recommend you to check our help article: How do I get notifications from my phone on my Fitbit device? and move forward with the troubleshooting steps from: My Fitbit device isn't receiving notifications from my phone. Take in consideration that due to this compatibility situation, the steps may or may not resolve your concern. If this is the case, try with a compatible device and let me know how it goes.
I'll be here if you need anything else.
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