When I launch PSE 10 Costco Version on Windows 10 Laptop after install, the program is the size of a postage stamp, which I obviously can't use. I can't find any info online, or a way to contact Adobe other than forums. Does anyone have a fix for this please?
You are using a hidpi display, and Elements 10 is too old to support hidpi. what you are seeing is not the full application window, it's the 'Welcome' window which is only used to let you choose if you want to use the editor or the organizer. Hidpi support is available in PSE13 or PSE14.