If you're doing them from an iPhone, there's no format to change. Make sure when you select the pic, you then select "Add this file" then "Save all images".
If that doesn't work, we'll call you names and post unflattering meme's of you.
M&P-10 + AAC Cyclone
Kel-Tec RFB + Griffin Sportsman Ultra Light 300
Pulsar Apex XQ-50