I must have written my 24 seed words incorrectly, options? I have 24 seed words for a wallet (greenaddress), and also had access to that wallet with a simple passphrase on my machine. I wrote down two backups of the seed words which are identical, yet I must have made a mistake as it isn't working to restore the wallet. This is after my passphrase failed 3 times and was reset which was odd.

Anyway entering it into greenadress tells me nothing except "log in failed". So I downloaded electrum to try and restore there. Entering the words into their text box doesn't allow me to click on "next" with no error warning. There are in fact 24 words so I'm assuming I misspelled one or put one out of order. 

What are my options here for most efficiently finding out which it is and regaining access to my funds?
If your old wallet supports the default BIP-0039, you could look up all the words and check them here: https://github.com/bitcoin/bips/blob/master/bip-0039/english.txt 

Maybe you wrote "odd" instead of "add" or smth. like this down.