Looks like the profile picture is clipped to the size of the needed image and only includes a tiny upper right piece of the image, so no useful information.
There is a way to post an image, though not all formats are supported. One is to edit an existing post, the other is availabe when you post a new message.
If you hover your mouse over the upper right of one of your existing posts you will see a quote ["] icon, and if the mouse is over that icon some other icons show up. The one which looks like a pencil allows you to edit an existing post.
Once you are editing an existing post or creating a new post notice that the upper right icons in the tool bar for that message contain a block quote icon ("</>"), a URL icon (looks like a chain link or diagonal infinity symbol), and between those something which sort of looks like a picture frame. This picture frame icon is the image tool. If the image tool won’t accept one image format you can try another.
Someone else may need to comment on the JetPack step 6 of:
I recall some people having issues where one of the JetPack steps was just blank…perhaps it was a network issue, I’m not sure.