ahahahaha I gave up I kept having to go to google to find out how to spell things

*has flashbacks of Geography class*  

I used to know far more than I do now...

I have been to London, Paris and Burntisland!

I got to 5, then hit a wrong key and all the answers popped up. It wasn't impressed by my score of 5/196.

However I redid it later and got 101/196.

I do know that the capital of Gabon is Libreville, amongst others.

But when I tried your link, I couldn't get it to work. I could get to the quiz, but it wouldn't let me submit any answers.

I came a cropper with the capital of Georgia.  Knew it was Tblisi, what I didn't know was how to spell it.  (I do now)

You don't actively submit anything. You type the capital in the box at the top and if it's right it will automatically transfer to the box beside its country when you type the last letter.

i.e. type Londo in the box at the top - it will remain in the box while you type those 5 letters - but as soon as you type the final letter n it will place the whole word London in the box next to UK. You may have to scroll down to see it. If what you have typed remains in the box at the top then either it is not a capital city or you have misspelled it.