I have a puzzle that is months old: Find the hidden message!

The solution can basically be broken down to three steps, the first was already done by Joe-You-Know, the third should be pretty easy. But apparently nobody knows the second step.
I personally don't consider it extremely hard, but that might be because I think in a certain way. A hint might make it too easy

Should I wait even longer, hoping that it might be asked one day in the far future (which is definitely possible), or should I give a hint, risking that I might make it too easy?

(This question sort of comes down to "Are old posts usually completely forgotten after a while or is there any significant activity on months old questions?" But there might also be other factors.)

  • $\begingroup$ Also: Yes, I could put a bounty on my question, which attracts more people. But since I only have 131 rep., I would like to consider other other options first. $\endgroup$ – Fabian Röling Jan 13 '19 at 11:45
  • $\begingroup$ Related: Unanswered puzzle - leave, self-answer or write a postmortem? (including self-answer) and How long should I wait before providing the answer to my riddle? (including adding hints) $\endgroup$ – Andrew T. Jan 13 '19 at 12:43
  • $\begingroup$ @AndrewT. I would even consider that second link a possible duplicate target. I didn't find it in my own research before. And the first linked question has a comment pointing to the "Necromancer" tag, so I should definitely leave the question open (and possibly unchanged) for at least half a year, I think. $\endgroup$ – Fabian Röling Jan 13 '19 at 14:19

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