Whilst I see something, I'm struggling with the photo quality. See, the pink hue where the test line is usually, looks as if the dye hasn't settled, which is weird at 10 minutes because usually they are done by then. I'm wondering if the photo quality is interfering? The recent photos you posted at 2 hours, can you take a photo right on the window instead of angled? Try to find somewhere without glaring daylight, or, use a lamp which isn't too dazzling (we have a touch lamp so has three different brightness settings). Failing that, perhaps remove it from the case and lay it on a plain white piece of paper or something similar.
They do sometimes have an annoying scratch on them, and an indent will be easy to find on removing from the case as it's more obvious on the back of the strip