I am only 2 transaction on delta plartform and today i am lost my 80+ token and 300$ ether.

.I donot understand what can i do?why hacker are attack general people ?prayer for me
They were hacked recently but they said it is safe to use site and as I don't see anyone else complaining about losing funds yesterday i think you might be victim of phishing site.
Have you tried to contact their support?