Glad you like the shirt.
The motto isn't on every item. You need to look at the front and back views of each product to see which version of the logo with or without motto is on each side. It was purely my personal decision as to what looked good or whether it was too crowded or too formal in some cases to include the motto.
Actually there are only three items I think which don't have the motto. The fitted men's shirt, the golf shirt and the 2 sided long sleeve shirt. These were more formal attire which I thought would be better with just the logo. The latter has the two logo versions front and back. Others have the motto either on the back or front. Check to see if the shirt you ordered is supposed to have the motto. If they made a mistake and put the wrong graphic on it they will gladly exchange the shirt.
I was impressed by the order sheet that came with the order which shows in small images the item ordered, how many, which graphic for front and back, etc. That cuts down on mistakes in the printing process but it probably isn't foolproof.
I've ordered about 30 items so far and only one item was less than perfect, even that one had a minor problem which no one else noticed. BTW, it's been my observation that the shirts and sweatshirts in particular are generously sized. So don't go overboard ordering two sizes larger "just in case".
But if you aren't satisfied please let them know. From their forums I read most problems are rectified quickly and to the customers' satisfaction.
Please let us know though if you have any unresolved difficulties. We won't deal with a company that can't be trusted. We're Mac people you know.