Clearblue Test Fluke?

I went to take a Clearblue rapid response test today (I’m 8 days late) and there was already a negative line in the results window, so I didn’t take it.

I was reading their test errors, but nothing mentions what or why this would happen. This is the second rapid response test I’ve had that’s had this.

Any ideas why these tests already have negatives? The first one was from a separate pack than the second one so I don’t think I bought a bad batch of tests, but I also don’t want to keep spending money if I can’t use it.

**Edit: to clarify - I’m asking because the other tests I’ve bought (same brand and type) were clear with no markings.**