You should now get an email with receipt, barcode etc. Print off the barcode attachment and follow the instructions. Alternatively you can click on the attachments to the right of the status 'paid fee' and print those.
They asked for the statements to be emailed, so I printed, scanned and sent them off last night. Let's see if that will suffice. All my pension providers send me a statement of income, at least annually, or as the monthly rate changes. This was always good enough for the non-O but the O-A is a different beast.
The requirements from the MFA via the London Embassy seem to change overnight and without warning. This may be because of the new online system bedding in but is it a coincidence that all changes appear to make applications more onerous?
For the record, I have just received an email from the London Embassy asking me to send 3 months bank statements showing my pension income. This is in addition to the uploaded pension statements.