Missing screenshot from apple review

I submitted by app 10 days ago. Apple reviewed it and changed the status to "Missing Screenshot". I did not get any email notification or anything such. All I saw was a missing screenshot status of my app. I checked and saw that 4.7 and 5.5 inch screenshots weren't there, but I had added the screenshots of 4 and 3.5 inch earlier and I never faced any issue. This time My app got stopped from publishing just due to this small error. Im so helpless. My PR company will be starting the campaign tomorrow and I the app isn't published yet.

Can anybody help me how to resolve this kind of issue. I don't think so that I have to resubmit the app as its just the screenshot issue which is not related to the binary file.

Kindly help me.