I have been there twice, and have not had any problems with wheat.
They have a large selection of breakfast, dessert, and savory crêpes. All of them are gluten-free!
They’re ordering station kiosk is a little bit confusing, but it does list all of the ingredients in everything, so if you have problems in addition to gluten you can easily talk to somebody behind the counter about it.
Incredibly tasty! I will be back.