We have one tumbling mat which I LOVE, and two packs of the foam puzzle piece mat. The fawn mat was beyond frustrating to get to match up in pattern - I feel the prints should just be repetitive at the connecting points, so it isn't an ACTUAL puzzle to put them together. They do have letters on the back that explain how to align them, still couldn't get it beyond 4 squares matching. I gave up, and they don't exactly line up in picture, but it is really not that noticeable at least.
Looked at the reviews on their website, and it seems this is a very common issue.
I love that I feel I can trust their product safety, and will pay a premium for that. I'd just maybe suggest going for a pattern that repeats and isn't so complicated to piece together.