What is your wife’s job title?

Finally someone in the comments who has self-awareness and is able to put aside ego to learn from the past! You will go far in life my friend 🫡

That last para is the actual revenue model right there 🤫

The manufacturer is not at fault tbh. Home printer using CMYK does not mean it’ll produce the same results even with the same materials with a commercial printer. There’s more to commercial printing than just a file format.

This is why people pay professional designers (print) to do the work. A pro would also advise to do test runs before going full production.