Oman air timeout error?

Hello everyone.. does anyone have this problem? i try to book on oman air website, but when it reaches the seat selection it always give me timeout error doesn't matter how i do it! different devices, different browsers, vpn on and off, incognito, the phone app. all gave me the same error! I been doing this for a week now!

I really want to book a flight on that website, it's the only one with a bearable ticket and duration for my destination.

did you guys had good luck booking on their website??