I am unsure of the difficulty of this puzzle, but feel free to give it a try
My prefix is almost dissolved
My infix is an array
My suffix forms nouns of action
I am the key
dpszugweijr
Since it's been a day...
Hint 1:
Fool you once, shame on me.
Fool you 13 times, shame on you.
Hint 2:
1 + 1 = 2
Hint 3:
I am the key is still part of the puzzle
Edit
I apologize to anyone who tried solving this and was unable to decrypt the message. At the time, I had used an encoder that I believed to work, but upon returning to this site and this question, it appears that it in fact did not work properly, and the cipher text was incorrect. It has now been fixed. I apologize again to anyone who fell short simply due to the last part.