FreezeWP is a simple plugin that temporarily puts your WordPress site into a "read only" - Code Freeze state. It's most useful when you are migrating a site. or just want to prevent changes.
QuarantineWP is a simple plugin that temporarily puts your WordPress site into a "read only" - Code Freeze state for Maintenance Mode or migration. It's most useful when you are migrating a site. or just want to prevent changes.
Get you previous "classic" widgets settings screens in Appearance using this plugin - Just intall this plugin to disables the block editor from managing widgets.