Welcome to the forum. Plenty of help here. Here's your first bit. Any photo you want to post needs to be resized to 151Mb or less or what happened to you will keep happening. I made a new folder in my pictures entitled resized pics for forum. Into this folder I put the pics I want to post. To resize I right click on the pic and open in paint, click on resize, click on pixel button, put 164 in horizontal size window, tick keep aspect ratio same, click save icon at top. I then go back to pic in resize folder hover over it until details show and check size is below 151Mb if not resize a bit smaller until it is. Once below 151 you can post it. Best of luck.
Jerry.