Angelina Jolie

Experts on chanel nail polish Orange Frizz: crumbles when applying. What to do now?

So this is the story. I purchased this gorgeous color, already out of stock. Yeay, I was lucky.
After 6 months, it has started to thicken. It is so bad that it is almost impossible to apply properly.
Also, since day one, it has not been a good quality lacque as would chip on the next day.
Suggestions?

Please note that
1. I close properly the bottle.
2. I am interested to know if I should ask the brand directly.
3. Is there any DIY trick to un-thicken the nail polish?

Thank you so much, I’m quite desperate as given the price tag I was expecting somewhat a better quality…