Make sure you are signed on to only one account. Running in an incognito window in Chrome solves this problem.
Before posting a new question, please refer to the reference documentation below and use the search tool to check past discussions!
If you are reporting a bug or error, please strive for as much clarity and detail as possible, include screenshots when applicable.
This tool is free and maintained by a very small team at an educational non-profit. We rely on this community to help diffuse the support load, so if you see an issue you can help with, please do so. Thank you!