Kaphotics

Not legit; needs to have a PID/IV correlation that the program is correctly flagging. It needs to be a "Method 1" PID. Assuming the IVs are unmodified, the PID should be F964768A.

You cannot generate it legally as it must originate direct inside HOME, instead of on a player-controlled game like SW/SH. The server checks every upload to see if it has the original data, and if it can't find it, you get error 10015. Transfers from their native game (e.g. SW/SH) are the origin of data, so the server captures that and assigns a tracker. SW/SH uploads are always allowed by the server, but the server PKH data will lack the GO data, and will still be illegal if someone checked. Anything generated is never "legit", it is at best "legal" if it is visually indistinguishable from something that was legitimately obtained.

look at the dates again, and think about it

Of course not. HOME has already seen it in a different ball; balls are immutable, therefore it's obviously hacked.

Inside the text box.

Unzip the executable and run it from a location on your computer. The DLL is self-contained within the EXE and should be able to locate itself.

Use a hex editor like HxD to trim it to the correct size. All you have to do is delete the data after 512KB (0x80000).

Again, if you want to have egg moves, then it must originate from an egg. The program is telling you that its details does not match what it expects. Eggs in Gen3 have a met level of 0, and do not have a Method 1/2/4 PIDIV correlation, hence the two messages in the output. Using the encounter database to grab a fresh egg will give you a legal result immediately.

Your starter Sceptile (Treecko) did not originate from an egg, therefore it cannot have egg moves. The entity has to originate from an egg to have egg-only moves. Use the encounter database if you want legal data.

PKHeX does not support ROM Hacks. Stats are calculated using the personal info data from the unedited game. PKHeX automatically calculates stats unless you click the checkbox to define stats yourself. Stats are not saved when stored in box, and stats are recalculated when you heal them in game.

Not a valid save file. Look at it in a hex editor, it's random junk. Does not look like a valid save file. Dump it correctly.

PKHeX supports editing Ranch save files, for the stored Pokemon data. You can then transfer them via drag drop.

https://bulbapedia.bulbagarden.net/wiki/Dudunsparce_(Pokémon)#Form_data

Refer to the mechanics of how the form is determined. Encryption Constant is not present in Gen 1/2, so it's not determined until it obtains one. Change it in Gen7 before you transfer it to HOME.

Safe? No. PKHeX can't verify the authenticity of an arbitrary HOME tracker, nor can it fetch HOME's tracker side-data to see which games it has visited. But, anyone who has your PKM file can try uploading into HOME and then dump HOME's side-game data from RAM to confirm it never visited. If you are looking to modify data that is only available in specific formats, then it must be transferred there first, obtained (legitimate or not), then transferred back to your desired format, otherwise it won't have the server data it should have. If you transferred it to BDSP then back, then added the BDSP ribbon, then the server would be able to confirm from its logs that the ribbon was never obtained during a valid visit, and was thus hacked. Have they actioned this? No. Could they? Sure. By definition, not safe.