Hello and welcome to you and lovely little old lady. 😍
We have this thing here that when you upload an image CoSo strips out any potentially identifing info. Unfortunately, that can strip out the orientation info, too. If you do a minor edit to it first, like a minor crop, it'll upload the way you intended.
We have a lot of tools built-in for identity protection, as here we aren't what's for sale. It can take a bit of getting used to, but it's worth it.