SD concerns and Distorted Display

I was originally extremely pleased with the product. However, I had a few issues that have yet to be addressed. I contacted customer service originally with a concern. The concern was the projector does not read sd cards over 4gb. I tried 256gb, 128gb, and 64gb sized sd card and the projector would acknowledge the card but failed to read the card. Customer service referred me to the seller but i have not received any feedback. My second concern is a major one. The projector goes from great display to a distorted black and white display. It seems like something is pressing against the projector distorting the display. If I turn it off it returns to normal when i restart.

###

