I had this issue as well, right after I installed xsane. But after I restarted my computer, my experience became very different.
The first time I used xsane, it didn't give me the option to choose which printer to select. It also gave very limited scan setup options.
But after restarting my computer, it allowed me to choose from one of three devices, all of which referred to my printer. I chose the one starting with "escl:https://". After doing so, I also noticed I had a much fuller set of options. It now scans properly for me.
I don't know if I should assume you guys already tried restarting, but I find that doing so fixes a lot of Linux issues for me, especially for software that has been installed since the current session began.