Powerwash is like a full reset of your Chromebook. It will remove all accounts and stored data from the Chromebook. Once it's done you will need to enter in your WiFi password again and then log into your @dlsnc.org Google Account and see if things work better.

How to reset your Chromebook with a Powerwash

  1. Sign out of your Chromebook.

  2. At the sign in screen, press and hold Ctrl + Alt + Shift + r.

  3. Select Restart.

  4. In the box that appears, select Powerwash and then Continue.

  5. Follow the steps that appear and sign in with your Google Account.

  6. Once you've reset your Chromebook:

    • Follow the onscreen instructions to set up your Chromebook

    • Check if the problem is fixed

source: https://support.google.com/chromebook/answer/183084?hl=en