A Google Classroom website update caused the "Create Kami Assignment" button became missing from the dropdown from your Classwork page. We are releasing a Chrome Extension and Microsoft Edge Extension update that will fix this. The extension version with the fix is "2.0.12749".
To update immediately, please go to link chrome://extensions in a new window, in the top right corner, toggle "Developer mode" and click "Update" on the top left side. This should update all of your extensions, and ultimately update Kami's extension to the latest version.
If you don't need it right away, your extensions will automatically update. It'll typically be rolled out within 24 hours, or the next time their browser is online.
In the future, if this button is missing, the workaround is to work go https://web.kamihq.com and click on the "Create Classroom Assignment" button. This will take you to the same assignments page.