For those interested in helping, here are the requirements for verification on wex:
"A photograph or a scanned copy of one of the following documents: a passport, a foreign passport or ID card. This is necessary to verify your identity.
A photograph or a scanned copy of one of the listed documents: bank statements, utility bills, tax documents, a document confirming your residence permit issued by local authorities, court documents or documents issued by the state or other competent authorities. Since these documents are needed to confirm the actual residence, the address of your actual residence must be indicated on them.
Photo of yourself (selfie) with a passport / ID card in hand. (bold in the original)
Documents with duplication of basic information in English take precedence over national documents.
File requirements:
Images should be coloured, should not be edited (trimming, photo filters, etc.), there should be no light spots, glare, shadows and other artefacts.
File size - no more than 2 MB, extension -.jpg, .png.
The quality of the images should be very good - you and the photo documents should be clearly visible, and the text - easily readable. (my italics) Recommended resolution starts at 300 dpi."