UserAgent: Mozilla/5.0 (Linux; Android 5.1.1; F1f Build/LMY47V) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Mobile Safari/537.36

Steps to reproduce the problem:
1. Remove the battery
2. And waited then it reset the Chromebook but it is still enrolled
3. Tried to go to developer mode but they blocked it

What is the expected behavior?
For the Chromebook to go to Dev mode

What went wrong?
I'm not sure but I read on a few websites and they said it should have worked

Did this work before? No 

Chrome version: 56.0.2924.87  Channel: n/a
OS Version: Not sure
Flash Version: 

I need help fast