I think I’ve been had, my first DePop purchase too! 
I don’t want to think the worst but I bought an item 3 days ago and have had no contact, no response to a message I sent this morning either.
I bought from this person as they’d sold lots of items and have their account linked to a (what looks like) real and active Insta account. I’ve just realised now that they have no reviews even though they’ve sold lots of stuff 😭
What do you think, would you message again and then if no reply report as item not received? I don’t know what’s normal on DePop, do people just post things out with no contact, will I know when it’s posted?
Have a feeling my money is lost and this is a lesson learnt!