I played version 51 last night, and I explored all I could without proceeding past the Poochys, and it seemed like that's where the demo ended for me XD
Re-read the first letter by you know who, and I checked a certain flag. So I saved directly in front of the briefcase, and checked all the starters. No shinies, so I used the SR button combo. Then something odd happened. The briefcase was closed, interacting with it did nothing, it didn't even give any feedback. I re-read the letter, went to interact with the Poochyenas, went all the way back to the port, and repeated reading and going to the Poochys, going to the suitcase, etc... Doing another soft reset and even hard resetting by closing the game both did nothing. Oh and if it matters, I did use the mystery gift code before all this, like right at the start basically after my first progress save.
I think the problem is that the flag triggers/is checked, right? But then saving the game and resetting messes with it somehow, as in the flag is left in a weird state. It's been checked, while at the same time being like.. locked/uncheckable. The briefcase gets reset when you reset the game, and requires the flag for it to open up, resulting in it being closed every time you save after checking the flag and resetting the game. Solution would be to save first then re-read the letter, or just read it after interacting with Poochyena, most likely. Takes a little more time to SR for shiny/ideal stat starters. But it is what it is I guess. Though, this may already have been squashed by the 53rd version. Idk. I just got it. I'm gonna start a fresh save, and just play it safe by saving before reading the letter/journal log sheet.
I know the game is buggy and glitchy. I expected that, all things considered. Just super ironic when you get hard-locked by saving which is normally what we use to prevent situations like this xD
Well... One more round!
Cheers!