Its codebreakers.
Got it sorted.

There was a glitch though. The last round I knew I put the code in right but it didn't take me in it just had the last puzzle with zero in the center. Refreshed and said to me that I'd solved it and got in.

Got this pic

My technique for solving.
Change all the symbols to the same of once character.

Find out how many greens. Change all but that number to the blanks and then continue until all the characters are in the right place.

Than change all remaining to the next character.
Then do the same.
See how many greens, Change all but the number of new greens to blank til its in the right place.

Repeat til you're finished.

Hope this helps.