Cymbidium flowers are stuck!

[Miss Flower]

I don't know what I did but this is the first time the cymbidium made flowers. Now it's stuck!

That means that the buds have been developing for ages and now they are not advancing. They look like they are ready to pop any second but they have been like that since a month.

I have the impression the blooms are starting to look yellow- so I think they might just fall off without even opening.

ANY IDEAS? I would be so disappointed if the flowers fell off without even seeing them open!

I am adding some pics in chronological order :
1. in September
2. early October
3. today- circles show where it's starting to yellow- although I think the colours might be a little off

4. what it's supposed to look like (pics from last year)