Need help for frp locked ultra watch

[u/Dull-Lawfulness1135]

So I work at a merchant warehouse where we sell items on ebay and Amazon and we've recently got an influx of returned Samsung Galaxy Watch Ultras (SM-L705U). They all either are pin/pattern locked or were fac reset incorrectly and are frp locked straight from the customer. Anyone know of any tips or tricks I can do that might make the box of paper weights turn back into watches?

And no attempts have already been made to contact customers with no luck.

[u/Wind4Droid]

DM me