Cannot input a 9 digit US bank account number

Ok first this is my first time here so I apologise if I am doing this wrong.

I set up a Fundraiser via Facebook (mistake number 1) and now I am not receiving the payments from Facebook as they are telling me I need a 9 digit routing number.

I am based in the UK and I was under the impression when I set the fundraiser up that I had given them all of the correct information such as my IBAN and account number but it seems not!

Can anyone here help me out, the fundraiser was for a lady with terminal cancer and I am desperate to get the money to her before it’s too bloody late. Facebook are being ducks about it all telling me it can take up to 2 weeks but the fundraiser started in bloody August.

Thanks in advance