I found in the manual for the vehicle that it has a valet mode, which disables a number of settings on the infotainment system, but I suspect that the feature list that would be disabled does not meet your requirements.
The next stop was the stand-alone infotainment manual, also lacking in useful information.
All is not lost.
The overall vehicle manual ...
I used to have a 1989 Opel Vectra. It didn't have bluetooth, AUX or USB, and I also didn't have the code for the radio and the battery had been flat many times, so obviously even the radio didn't work.
Fortunately, the radio was of standard size and easy to remove. I replaced the radio with an entirely different radio.
In new cars, you cannot do that, ...
The Astra K was released in 2015 so it would still be under warranty (as of 12/2017)
I'd take it to a local dealership and explain the problem as it could be a faulty radio or a software upgrade could be required