- Plesk for Linux
- Plesk for Windows
Plesk WordPress Toolkit countdown timer can't be disabled without disabling maintenance mode itself:
Setup of maintenance mode of WordPress site cannot be saved if Countdown timer set to 0 days 0 hours 0 minutes even Countdown timer is disabled:
PLESK_ERROR: "You need to specify the remaining time or clear the 'Countdown timer' checkbox."
Countdown timer is in enabled state despite of the fact that it was disabled previously.
This is Plesk bug #EXTWPTOOLK-1507 which will be fixed in one of the Plesk updates.
The only possible workaround for now is disable maintenance mode itself, to disable Countdown timer: Log into Plesk > Domains > example.com > WP instance name > disable Maintenance mode.