If you can sign a message from an old staked address, I'll tag the account with red trust until you get it back. If you ever get it back, you'll need another signed message to confirm that.
Update: I received the signed message by PM, but I'll post it here for reference. I don't want to post the email address in public, but
accountname@gmail.com doesn't look like a big secret to me, so I assume OP is okay with this. If not, let me know and I'll delete it, but I prefer a public reference.
-----BEGIN BITCOIN SIGNED MESSAGE-----
My account thirdprize has been hacked. Please reset the email to **********@gmail.com. The current date is Monday 23nd April 2018.
-----BEGIN SIGNATURE-----
1Di4b12bXWUTyyvHG8DXHs2hXJxe5jwya
IH+vfD46cLPtF9kFB30cbBMo7uUJJ9KNq6xpAHMw0B2WfoB7lwpWSMSW7t6+v6Z4psicRWr6xELMspr1i8aBLug=
-----END BITCOIN SIGNED MESSAGE-----
Staked several times
here.
thirdprize tagged.