my android app got soft reject

hi there,
recently codecanyon email me that my item got soft reject. and i can submit it again… they just note a think "- Please make sure your screenshot’s resolution is complying with the following standards, we’ve detected some incorrect resolutions. (Portrait: from 700px to 900px high, Landscape: min resolution of 1280 x 720 and aspect ratio of 16:9). " i don’t understand which screenshot? can you please explain me what i have to do before submit my item again?

thanks in advance.

update screenshot 450px X 900px