When I try upload my documents for tier3 verification, i get the following error message:

Proof of residence: must be at least 98 KB and at most 3.0 MB.

However the document is a jpg, 728kb and 1654pixels x 2339pixels.

Does anyone know whats going wrong? Is there another chance to verify? I would like to asap. When I try contact kraken, i get no response at all.