Bought second hand. Having issues with setting it up.

I was able to sign into my account for the Garmin Connect App on my S9. I also downloaded the Garmin Golf. All of the rounds the previous owner played populated in my stats. I deleted the round. Then I saw that all of the activity was uploaded onto my account as well. I reset the watch but it seems like the data is there to stay. The biggest issue that I'm having is when I select Garmin Golf from the Gamin Connect menu, I get a main screen with menu and "Start New Round" icon. I select "garmin devices" and it says "no devices paired". But in the Garmin Connect app it shows connected. I'm also not getting notifications on the watch. I have app permissions on, permissions are showing for phone and sms on the app info for Garmin Connect. I'm not sure what else to do