Sorry, but this isn't evidence. Anyone can forge a screenshot like that.
Dev, if you are really still here and want that account back, you need to sign a message using an address you have proved you own at a previous date.
All the info is here in one of the oldest, locked forum posts on bitcointalk:
https://bitcointalk.org/index.php?topic=497545.0
Please do this and show us you are still committed to this project.Just to note that I also received the same email. The only difference between that email and the one I received is that mine mentioned zCash.

There is a bit of hostility towards the approach I've taken with this project, which while I can fully understand, doesn't make me really want to get involved too much. I'm not quite sure how to proceed, as people want answers, but when they get answers that they don't like it is easy to point the finger at me. I was quite open in my previous postings leading up to the pump that this project received and I gave all the appropriate warning signals, which is when I decided to reduce my holdings, however, because of this people think I'm just trying to sabotage the future of the project.
All I have to say is, you chose to buy into this project yourself, you should've done your own research. Just because someone pushes for answers and you don't get a big bag of money, you should be looking at yourself and your strategy when it comes to cryptocurrency projects. It's super easy to make me a scapegoat, but you should have been reading into the proceedings of this thread a bit more critically.FWIW, that email comes from a gmail account and my email is gmail-hosted, so its basically cryptographically signed and if it was worth the level of effort to prove the signatures then I'd do it. Short answer: that email came from whoever controlled the gmail account.