Doesn't let me register the realms every time I press the register box after I filled everything for pocket edition

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What I expected to happen was...: to make my account
Describe what you thought should happen here

What actually happened was...: that once i finish filling every thing and try to press the register icon or box, it doesn't do anything
Describe what happened here

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
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