Welcome to the Fitbit Community @Qxx.
Thank you so much for taking the time to troubleshoot the issue you're experiencing with the heart rate monitor not working on your new Fitbit Versa. Since the steps you tried didn't work, I recommend doing a factory reset. Please note only that after doing a factory reset, all apps installed and the data that has not been synced yet to your Fitbit account will be deleted.
In order to do the factory reset, please do the following: On your device, open the Settings app > About > Factory Reset or Clear User Data.
Open the Bluetooth settings on your phone and unpair the watch from the list. Then, please set up the watch back to your account by following the steps from this help article: How do I set up my Fitbit device?
Fitbit has a 45-day return policy, so anything purchased directly from Fitbit can be returned for a refund for any reason within 45 days of shipment. If you've purchased from a retailer, you'll need to return your product directly to the retailer, following their return process. This is generally printed on your receipt, though you can also find it on the retailer's website. Note that we're unable to influence retailer policies. You can read our full return policy on our website by going to http://www.fitbit.com/returns.
Let me know how it goes, I'll be around!
Want to discuss ways to increase your activity? Visit Get Moving in the Lifestyle Discussion Forum.
