All Crio Micro-Experiences need a valid access code for enrolment. The access code is included in the Getting Started Guide you received from Crio.
Please check the following while enrolling into a Micro-Experience:
Ensure that you are enrolling into the correct Micro-Experience (E.g. For Launch Tryouts, please select:
QEats SneakPeek(see image below))
Try copy-pasting the access code (it is easy to make errors when you type it yourself).