Not sure if this is a bug of the game or GOG...

The game itself shows that I already got achievements Champion III and IV (15000 and 20000 points), even though I never reached that score until recently (I think that happened after one of the updates when a bunch of achievements popped up). But when I actually reached over 15000 points, nothing happened and "Water Train Station Level 3" didn't appeared on GOG Galaxy

Is there any way to fix this?