Keep trying! Some of us have more issues than others. Our Help section has things on how to post photos stickied to it;
https://www.quiltingboard.com/qb-help-center-f27/
First year I was on the boards, I couldn't figure it out. For me it is because I use an old school digital camera and my file sizes were too large, so before posting I use the defaults on this site (no affiliation, it's just easy, free, and doesn't set off my virus scanners),
https://www.reduceimages.com/
I download from there and upload from here using the "go advanced" button. Other people can use icons on the ruler bar but those haven't been so good for me.
edit: wanted to add a hello and welcome and playing "guess the block" is a favorite of mine
