Hey, I used the id that shows over the repo in the Desktop app, but I didn't see "ID" explicitly mentioned so I'm not sure if it was correct. Could you please check my submission and make sure it is ok? Thanks! 

Looks like you used the workspace id, which should be good enough.
If you want to dot your Is and cross your Ts, then take a look here: https://discord.com/channels/1085902164922220625/1395284018215387238/14141761138...