Pixory Photobook - Quality

Hey all,

I've just come back from my honeymoon and I've always wanted to try printing a photobook through Pixory (I've seen reels on Instagram about it). I just tried playing around with it and uploaded 8-9Mb photos taken with my DSLR. Once uploaded, the pictures looked quite blurry and before I continue further, I wanted to ask about your experience with the quality of the final photos. Another post had mentioned that the maximum allowable size per photo was 5Mb, but my photos have uploaded without error.

Thank you!