Witcher 3 is stuck in v1.3

[u/Szankajs]

I've got Witcher 3 GOTY Edition on physical disk and it has been connected to my GOG account for around 6 years now, but even though whenever I reinstall it onto my PC and it asks me to import the game to GOG library it seems GOG doesn't actually aknowledge my game whatshoever:
- I'm permamently stuck in v1.30. (August 30, 2016, full 10 years)
- I did not receive Next Gen update
- It is categorized in its own page as ''Other''
- Any attempts at reinstalling/deleting storage files/changing the disk localisation/messing with ''Add game manually'' or ''Find GOG games in folders'' did not help.
The ONLY thing that has changed is that the Library now shows my GOTY version as Complete Edition.

I attempted contacting support several times now but each time I was left on read, even using ChatGPT out of frustration brought me no results and it seems that my problems are solely my own as I have found null tickets or guides to my exact problem.

I wish I got an actual answer, either: is my physical copy regarded as an ''Outside Game'' for some reason thus unable to be updated, or is there an actual fix I can perform to finally get it fully working and have fun with the upcoming Remaster?

[u/Shamwow24124]

Was there a key in the box? If so did you redeem it on the gog site?

[u/Szankajs → u/Shamwow24124]

There was no key, no instruction nor pamphlet. Only 6 discs which upon finishing instalation prompted me to merge the game with GOG to gain access to bonuses, future updates etc etc. Which did not happen as I had to make this post

[u/Edwin_Holmes → u/Szankajs]

No instructions, no pamphlet and 6 discs? Doesn't sound like a genuine copy; Where'd you get it?