Unsupported document type error

sheikhazad

I have been uploading verification documents as they are being requested.
I am now asked to submit bank account proof document. But no matter what format I try to upload the document in, it alwas shows this error.

We don’t support that file type.
Supported file types include .

Hannah_Payoneer

In this case, we request that you would email us the document so we could upload it for you. We are here to help you.