Reprint of pan card

Dear all,

I am applying for reprint PAN card through online, and i have selected the option submit scanned images through e-sign. and while I am uploading the aadhaar copy (proof of address&Identity), its showing max PDF size 300KB per page. but my aadhaar copy size is only 66KB i.e; below 300 kb only, bt it is not uploading..

anybody have any idea on this ??