Can't pair Sense 2 second hand

[raamv]

Hi

 I just replaced my sense with a sense 2, bought 2nd hand from a local friend here and it was working properly for him. 

I ensured that he unpaired the sense 2 and reset the watch. NOW when  I paired with it ,

it gives me this error " cannot pair : This device has been locked and cannot be paired. This may happen if a device is reported lost or if a warranty replacement has been issued. If you believe this is an error, please contact Customer Support."

He assured me that he bought it new and was the only user. 

Can someone please help in pairing this with my app? 

TIA.

Moderator Edit: Clarified subject

[MarreFitbit]

Hi there, @raamv. Welcome to the Fitbit Community Forums. Thanks for the details provided in your post about the issue with your new Sense 2. I understand where your concern is coming from. We're here to help you!

I've seen you contacted our Support Team after posting here and they've already assisted you. If the steps that our team has provided did not work, please feel free to contact them back for further assistance. Since you already have a ticket open with them it'd be easier to continue the follow up on this matter with them directly. Thanks in advance!