photos are stretched, cutted and uploaded with a black bar on it

[legacychimera247]

as the title say, when i upload a photo with prostogram the photo it actually get stretched, cutted on the lower side and that part is replaced by a black bar on the top...to make it more understandable if i upload this https://1drv.ms/i/s!AlyMkCypv00qgsR4cd1w4JRFLWxI3g the result will be this https://1drv.ms/f/s!AlyMkCypv00qgsR5OrhhqKrxJbKohA and it's really annoying...