Wow thank you so much! You're the first person that tries to go through my poorly made first ever secret lol so I'm sorry for that.
I think what you might be missing is https://imgur.com/a/ this here at the end... I just checked and it does work even tho it's probably a pain to catch ingame.... I'm sorry again and thanks for playing!!
okay so, i've finally sat down and written out every possible order of letters (32 combinations, if i account for possible B/P and M/N mixups) and tried them all with "https://imgur.com/a/" in front of them, but still haven't found a solution. that said, dont sweat it too hard! i totally get how difficult and unpredictable game development can be, so there's nothing to feel especially sorry for!! even if it ends up being unsolvable, i still had fun trying to puzzle it out :)