Here link system missed product key for update

My HereLink unit was sold to me by GetFPV, there is no product key stick and There is no product key on the included documentation or the invoice. I contacted them for that topic but they didn’t reply until now.
it’s very urgent and I don’t have time.

Please advise what can I do

GetFPV has all the keys for units they have sold. so you need to contact them

thanks alot, they sent the key.