Starting on June 1, 2022, you will no longer be able to edit your classic Google Sites. This is because Google is converting everyone over to new Google Sites. Previously, Google had announced that this change would take place on December 1, 2021.
New Google Sites gives you more site tiles to choose from, allows you to add a Cloud Search box to your website, and automatically adapts your website to be mobile-friendly.
Here is the timeline of events:
June 1, 2022: You cannot edit classic Google Sites anymore
June 31, 2022: Existing classic Sites need to be migrated to new Sites by today
July 1, 2022: Remaining classic Google Sites will no longer be viewable
Before you panic, Google is not deleting your classic Google Sites on July 1, 2022. If you don't migrate your classic Sites to new Sites by July 1, Google will download your classic Sites as an archive and save it to the site owner's Google Drive. Google will also draft a new Site of your...