Thank you for your patience as we looked into this and worked towards a fix. We have mitigated this issue, which was preventing teachers and students from logging in if they were using an out-of-date Chrome browser.
We strongly encourage all users to update their Chrome browser to the latest version to prevent similar issues in the future. Here are the instructions: https://support.google.com/chrome/answer/95414?co=GENIE.Platform%3DDesktop&hl=en
We will continue to monitor these fixes and provide any updates if needed. If you run into a log- in issue, please contact Summit support at firstname.lastname@example.org