I kinda have a similar problem. I keep trying to switch it but it won't. please help  

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2. Technical Issues and Workarounds
3. Why can't I change my username?

Hello Polar, I'm having a similer issue. I changed my name, but it keeps switching back to my old one. I agree that it is possibly because i've already changed it before. And thanks Evan!!!!! Bye

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2. Computing Platform Community Discussions
3. API Username Check Bug?

Yall could do sience or algebra.   

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2. General Khan Academy Questions
3. What subjects can be used to maintain your streak?

 There is like 100,000,000

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2. General Khan Academy Questions
3. How many skills are on Khan academy?

I don't like the words u using. I don't understand.

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2. General Khan Academy Questions
3. I found out how to get atlas, tesla and artemis badges

I have a problem like that. I can't find any mastered.

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2. General Khan Academy Questions
3. How do I find where my energy points are?

help me on this! please! 

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2. General Khan Academy Questions
3. Skills