Just to explain my question in the opening message.
At present, a landscape image of 1024 x 768 pixels will be accepted, but a portrait format image of the same size will be rejected. Perhaps the minimum should be set at 768 x 768
For me the minimum size
768 x 768 pixels is OK !!
PROPOSAL
The amended text for resolution (image size) to fully read (below are provided 2 versions of the wording):
Version 1Resolution (image size) for landscape format must be minimum 1024 x 768 pixels and not more than 4000 x 4000 pixels
Resolution (image size) for portrait format must be between 768 x 768 pixels and 4000 x 4000 pixels
File size maximum is 4000 KB
or (even better wording and more simple),
Version 2Resolution (image size) must be between 768 x 768 pixels and 4000 x 4000 pixels
File size maximum is 4000 KB
Regards / Jadran