I'm having the same problem at the moment. Most of the documents they deem acceptable don't exist here and it will cost me a lot of money to obtain the only one that does. I've uploaded other Govennement issued forms of ID but they were immedialty rejected. My attempt to contact them have been ignored.
I attempted to reply to your email but it was rejected with the following message -
"Mailbox size limit exceeded [protected]-JRfDtMptio-wxdCgbsQ (in reply to end of DATA command)"
The answer to your question is that it's the same as I use here.
How did you manage to get this resolved? I'm having a similar problem, they simply reject all the identity documents I've offered and insist I upload documents I simply don't have and can't get in the UK anyway.
I've just received another email from them telling me again to upload my driver's license card and not a copy of the license scan on paper. I've already told them at least twice that there is no card part. What I uploaded is a scan of my entire driving licence. Any suggestions would be greatly appreciated.