Not too difficult if I could figure it out 😅

Thanks!

I was giving too much attention to the poem, I thought "rot" was referring to Caesar 7 too at first (like rot-7 cipher or something).
Thanks for the puzzle btw ;)

Okay, I made it. :-D

Some weird coincidences:

• Decoding the message in rot13 gives ccmccccmcccccccccccccccccccccccccccccccccixxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxixxxiccccciccccccccccccccccccccccccccccccccccccccccccccccccccccccccccci which are all roman numerals.
• dcode.fr says ppzppppzpppppppppppppppppppppppppppppppppvkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkvkkkvpppppvpppppppppppppppppppppppppppppppppppppppppppppppppppppppppppv looks like it's encoded for 7 segment displays, which makes no sense because it does not look like that at all, but by coincidence they picked an encoding with 7 in the name
• io and sd are next to each other on the keyboard so that feels like you could do something with that geometrically

It took me a while to figure out that it was triple coded.
What will be next? Quadruple coded? /jk

Well, I've learned a lot! 😄
Thanks for an interesting puzzle and giveaway. (And quite a nice poem)

Finally got here with hints =)

Cool puzzle! I wouldn't have known to look for Deadfish without the last hint. When I searched fish in dcode, the only thing it pulled up was some other programming language called Blub.

I'm in! :)

Thanks for all the fish!

The first part I got after the first hint, but I'd never, EVER heard of the second one before, so I didn't get that until the third hint and the dcode's cipher identifier.

A bit late, but made it. Nice one. Should have read the 3 hint earlier, while I focused too much on the first 2

Hell yeah, what a nice suprise! Thank you very much! :D