What gameplay feature is this bug affecting?
Achievements

What's the issue? Please include any error messages you receive and as much detail as possible.
My achievements are locked when they should not be. For example, the "Scavanger" achievement is marked as still being in progress, despite the three following achievements in the same chain having being unlocked in 2015 ("Collector", "Going Wholesale" and "Running out of space"). Same goes for other achievements in the "Exploring": "A whole new world" is also marked as still being in progress despite showing that 101054 out of the 50 required steps have been taken. Not sure if there are any issues with other categories.
My device is a Matebook D14.
My operating system is Windows 10 Home version 22H2.
My browser is Google Chrome, running Chrome version 120.0.6099.130.

Any links relating to this bug? For example, if a particular lion is bugging, what is the link to that lion?
https://www.lioden.com/achievements.php?id=73835

Any screenshots you can provide us with?


Please provide us with step by step explanation how this bug happened so we can attempt to replicate it. If it's complex, please include screenshots where possible:
I think this bug is connected with my user activity on Lioden. I began playing Lioden in 2015-10-06, but took a long hiatus some years ago before continuing to play in December 2023, and it appears that most of my achievements have been whiped, as I have been getting begginer achievements like "Rude, Much?" and "Sage and Sound". However, some of them are still marked as being completed in 2015, 2016 and 2017. My guess is that the earliest achivements got reset because of the amount of time my account has been inactive, but those that have been completed later have not reached this time limit.