Given the puzzle and the provided hint paper for bayw bayw , the simplest answer is that the phrase means: decodes to: "We need to submit the paper paper" — but unclear. If you want, I can fully brute-force decode it if you give me the cipher method, or confirm if it's a known puzzle phrase.
Could it be “please do … paper”? No.
The phrase "danlwd wy py an bayw bayw" — the word "paper" at the end suggests the cipher might be shifting letters.
