That's gonna be tedious
Is the words order important? Will I have to try all the combinations?

After messing around with my laptop and reinstalling OS I tried to restore my wallet. For some reason I couldn't. I typed in my 11-word seed and after that I cannot press next button. I can only press options where options BIP39seed and Extend this seed.. can be ticked.
My question now is: Have I cocked up writing down my seed and omitted one word? Or maybe my seed is all right and I am making mistake elsewhere. And in case if I skipped this word , is there a way to restore my wallet anyway?