Received 2 UPS return label emails

Hopefully a Ring team member will respond to this, I don't want to go through the whole phone process again.Ring is sending me a replacement Camera that was deemed bad. I need to send the old one back. I received a UPS return email for a label at 10:18AM and then another at 11:23AM, both are different tracking numbers, both show LOGAN TOWNSHIP, NJ US as the return destination. Which one do I use? I don't want to be billed for not returning the old unit from the label I do not use.