A snapshot first. Then the update.
Updating a plugin on a live site is the moment things break. So the snapshot is not a setting you remember to turn on: it is a step of the job, and the update does not run without it.
The snapshot is a step of the job, not a setting you remember5.4 · snapshot of 5.3 taken 12 min agoPut 5.3 back
9.4 · snapshot of 9.3 taken 2 d agoPut 9.3 back
6.0 · up to dateActive
The copy is taken before anything moves.
When a job updates plugins, ReDock Web asks the site which plugins have an update waiting at the moment the step runs, copies each one aside, and only then updates. Asking at the moment of the update matters: an hour after you queued it, the list is a different list.
The way back is a button, not an email to your host.
The snapshot sits on the plugin's row with the version it holds and when it was taken. Press it and the restore is queued like any other job: you watch it land, and it is recorded with your name on it. A search and replace has its own way back for the same reason.
Connect one site and look.
One connected site is free, with no card. Install the plugin, type the code, and the site is on the list a minute later.
Free for one site · the desktop app is free on every plan