This is the area that I mean:
https://ibb.co/bX1x72C

And this is where I can't go back:
https://ibb.co/jT4R9JZ

I found you do not get trapped. That there is a way out, often in a way that you don't think. That area, you have to ride the little windmills from one to the next all the way up.
I found this walkthrough helpful for a push forward when needed - no narration, and the part your at is around min 20: https://youtu.be/ifSEll40LKA

Yes, I saw that walkthrough and I know where I missed the star. But I can't go back to get it because I can't jump high enough here:
https://ibb.co/jT4R9JZ

I know that I'm not that far in the game so going back to the start wouldn't be a huge deal but if this can happen it may happen later in the game, too.

OK, sorry, my mistake. It was possible after all. I missed something else...

I wish I knew what you missed as I'm stuck in that area and can't find a way to backtrack...

I thought I got all the stars but I missed one. Watch the video above and check if you got them all...

Thanks, yes I found the missing star. I'm now trying to finish the next to last level, but I missed a star or something.

I really hate watching the videos. It seems like the person making it wanted to goof around as much as play the game and it gets annoying to watch the video take twice as long as need be just to see where I'm stuck at and to figure out how to progress.

About 2 hours of gameplay is me accidentally idling the game when I left my apartment to visit my mom who lives in the same building on another floor.

Thanks again for the tip. I'll be glad when I finish the game.

I finished it...

Do you have to restart the game to get all the stars, or can you walk back to where you came from?

After you finish the game you can restart any chapter you want.

引用自 red：

Yes, I saw that walkthrough and I know where I missed the star. But I can't go back to get it because I can't jump high enough here:
https://ibb.co/jT4R9JZ

I know that I'm not that far in the game so going back to the start wouldn't be a huge deal but if this can happen it may happen later in the game, too.

How did you solve this??? I never got the one on top of the windmill and im stuck in the same spot...

Still stuck on https://ibb.co/jT4R9JZ, I find I can only access 2 stars I have already got, and must have missed one of the 3 earlier ones...?

I'm stuck in this same spot - help!

Did any of the people stuck in this spot find a way out? I am stuck as well won't be finishing. Gris is beautiful, but replaying a game over and over again looking for subtle dots isn't my idea of fun.

The game is made so that you need to collect the necessary stars to move on to the next chapter.
Important to note that there is a difference between the necessary stars (the ones that follow Gris around) and the 'mementos' that look a little bit like them but are different and don't follow Gris around.
The mementos are not necessary for game progress, and if you miss any, you can go back after finishing the game and level selct unlocks, and pick them up then, if you want to.

If you don't have the platforming skills - or patience - to get the 'necessary' stars in a chapter, then you will be stuck in the game, yes.

However, it should be doable for (most) people, with a bit of patience at least.

I myself am an old lady newbie on a non-gaming potato laptop with non-gaming kb/m, and with slow reflexes, and clumsy old hands and terrible at platforming. And did still manage to finish the whole game through. With, yes, quite a bit of effort and retries at some of the more difficult points. But still doable !

Best wishes to you on your efforts moving forwards :-)

I thought it a very lovely game, and was happy to put in the time and effort. YMMV.