If you are still here and reading this thread OP, let's start at the beginning.
Where and how did you buy this Coldcard HW? Post the exact website from your browser history or tell us if you bought it in a physical shop or from someone in a face-to-face meeting?
Did you (and how) generate the seed to the Coldcard where you deposited your coins?
Did you do anything (and what) with the wallet during the time that transaction happened?
Maybe you can post a picture here and show us how your Coldcard looks. You can upload the picture on
https://www.talkimg.com/ and share the the link here.
