<DTPOSTED>
<DTUSER>
<DTPOSTED>20200106
<DTUSER>20200106
I downloaded my Amazon credit card statement today as OFX/QFX and could not import. Turn out that it was not well-formed with empty DTPOSTED and DTUSER.
If you are in the same boat, quick fix is to edit the file and just add some date value as show above.