UPDATE 1:50pm ET:
The phones are back up and working. Thank you for your patience.
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We're troubleshooting an issue with our phone system right now, so all calls placed to our Technical Assistance Center will go to our voice mailbox where you can leave a message and a callback number. We should have the issue resolved soon, but if you have an urgent need for assistance, please email [email protected] and we can help via the ticket system.
Apologies for the inconvenience.