12 characters, you know you are looking for a two letter keyword
There are not many 2 letter keywords. Me is one of them that is contained in the string. Simply reverse each group of 6
Looks like a passcode. Open or ∇
The passcode returns invalid. Open and Accept share the same glyph
Again, passcode format is there. Try the simple ciphers to get it.
Atbash the letters and numbers
Invalid. The reverse of live is die