Personally, the availability of updates is very important to me. DRM-free offline installers are even more important to me. If GOG wants to encourage me, as a customer, to spend money on games, this service should work well.

You see, I completely agree with you. But, fortunately, it doesn't affect many games here at GOG. This is often completely exaggerated. Look at the number of games (without DLC + extras) and then compare that to the affected games that are missing updates (not missing OSTs or similar). That's only a very small percentage.

Personally, I handle it very simply. I either don't buy the affected games at all, or I buy them on sale for 75% or even higher discounts. Then I at least have an offline installer. Some of the missing updates aren't serious, so I can live with them.

Again: I don't like the situation either, but it doesn't affect very many games, and thanks to an active community, some patches do appear after a while. I recently managed to do this with "Dome Keeper" (update and DLC). Politely asking sometimes gets you some results, and some rights holders turn a deaf ear. Still, I wouldn't buy those games from Steam or Epic. DRM is a plague.

I think my sentence didn't reflected well what i meant to say :

it's the addition of multiples issues :

The lack of updates (Edge of Eternity is the worst case scenario possible and i'm really ashamed for a studio from my country : the lack of professionalism regarding the gog's version is abyssal)

The naming convention used for some games : sometimes it's impossible to determine without installing the game if it's already up to date

I will take an example of a game bought today : Gungrave G.O.R.E
i went on Steam to check the last version which is 1.05 but in my library (GOG) : it's named 67402_GOG (why not simply 1.05_GOG or put somewhere which version it is : i'm puzzled ) as a result i don't know if the game is up to date.

The real problem is : too often the lack of changelog or the changelog is no more updated since a moment.
I guess the devs don't take the opportunity to do this / or provide it.

GOGDB is helpful to some extent : it is clear (GOG should take example on it for the library) ; because the UI is starts to getting old.

Plus : the buggy automated process when a game is updated or simply the first time the game is added to GOG : Sometimes some extras are put in the DLC section...
And what's worse : a bug reported in this case , fixed could reappear later.

The old games are mostly not affected by those issues... (mostly because some localization could be missing, usually this is fixed after a while)

I sent an mail to different devs / publishers when a game wasn't up to date and i stopped because i never received an answer (i always asked nicely)

The support is clueless in some situations : for Sins of a Solar Empire®: Rebellion Ultimate Edition (the previous package for this game) : is missing two DLC -> The support was unable to answer if i could add those to the older package i own. I was forced to contact Stardock : which told me GOG support should be aware of this & this information should be displayed on the store page.

I understand you very well, and the problems you mentioned are clearly there. You certainly shouldn't be ashamed of your poor customer service; I can assure you that there are good and bad people, jobs, and situations everywhere on earth. It's not your fault. :D

I think I've simply taken a more relaxed view of all these problems these days. The reasons for this are probably manifold, and I believe they can be categorized as follows:

1. GOG has no serious recourse against rights holders who don't provide GOG with updates. Better contracts could help, but they might also discourage them, and even fewer games are being published here—even games that are technically sound. Who can say?

2. GOG's catalog has grown dramatically in the last decade. There are over 10,000 items in the catalog. More complex work takes up a lot of time to land classics like Resident Evil and Dino Crisis. I'm sure GOG simply doesn't have the manpower to handle everything smoothly. In addition, numerous poor decisions (contract forms, work processes, open technical issues, etc.) affect GOG and also create a lot of work.

Contacting developers and publishers rarely makes sense. Out of 15 attempts to contact them via email or web contact form, I only get one response at most. The chances are much better on Dicord, as there are many interested parties watching in the channels, and you're no longer completely anonymous. But that's not always effective either. With "Trail Out," I found the way I was treated as a customer downright disrespectful.

And on the subject of game versioning... it would be totally easy if people adhered to the standards and simply marked forks from Steam to GOG as such. In fact, I also see this as a sign of professional incompetence or poor organization.

Well, we shouldn't get upset and enjoy the games that work and are fun. Fortunately, the community often knows how to help itself, and at least we can avoid products from companies that lack a customer focus.

Jean-Jacques Rousseau is said to have once said:
"Human freedom lies not in being able to do what he wants, but in not having to do what he doesn't want."

;)

So I'm out of the little bit off-topic discussion now :)

"One Lonely Outpost"

1.0 available on Steam

Well... the question is if it is really 1.0 on Steam. From some reactions I read on the forum there, people were complaining that while the devs declared it as 1.0 (the same day they released it on consoles) it is still version 0.9.11

A tiny correction here. Timely updates ARE already part of their contracts ... or at least they were in the past. GOG just never enforces these clause for known reasons.