Help Pix will not download with texts


I converted from original Galaxy Note (bought 2010) to Note 4 (2014). Original Note would download pics via wifi from my home. Note 4 will not.

I went to AT&T store and pictures downloaded.

I live in the country, limited signal strength, use AT&T microcell for the wifi.

I saw the comments for 2012 on this subject. idk why there is a problem at home and not in other wifi areas. Obviously signal strength. Any ideas?