Board Game Arena

I have read the rules over and over again but can not find the answer.

I have had several games now where somehow my "group/area"-points are decreased/disappearing.

Let's say i have a group of 3 tiles where all of them have red apples, I have 2 points for this next to my red apples.
All of a sudden, when placing another tile somewhere else on the board, the point is suddenly 0.

I can not see anything in the rules explaining this.
Can someone please explain why my groups of several tiles with the same apple color, suddenly gives 0 scores?

Hum, the points decrease after each blossom, since the die value increases, but probably not the issue here.
Maybe it’s a bug. Can you provide a link to a game where it happened?

It could maybe be that it decreases when a new round starts.
I think that is what happens here at move 15
https://boardgamearena.com/table?table=376325390

I checked but the only decrease i saw is normal:
At move 18 you achieved a full turn with the dice
so the dice value is risen by 1.
This means all apples crops decrease by 1 too.
Note that apples trees not next to you biggest group do not count in total apple tree group size.

That is not quite right. You score all groups of one colour at a harvest, not just the biggest group. That said, you generally don't want two disconnected groups of the same colour as they will both score poorly relative to a single bif group, because of the subtraction of the die's pip value from each group.

I noticed the same problem, the values of your apples all reset to 0 even if some have 2 or more. This is particularly bad for end scoring.
The reset happens at the blossom scoring