Hi,
I am aware of the problem with long-lasting achievements. But I have created the same system for all achievements. For this reason, it had to be a mistake in all. But only a few insist on not working. It's a problem with the Steamworks infrastructure of the game engine I'm using. Because when I designed this game and other games I experienced the same problem too much. The inability to achieve success in time is another problem.

Some users suggested removing the problematic 4 achievements. I removed the 2K, 3K, 4K and 5K achievements by following this recommendation. If there is a serious problem in other achievements, please open the discussion topic.

Thank you for your patience until this time. I also apologize for not being able to offer you a solution.

Have a good day.