Here is our video tutorial about how to manage files using File Manager in Plesk Control Panel.
Please note that if the disk over usages or any limits are reached then unsuspend is temporary few hrs solution. To fix the resources you need to find out which limit has reached > and then to increased the limits reached by account using steps as mentioned at https://helpdesk.webji.in/en/article/how-to-edit-featureslimitations-of-web-hosting-ac-in-plesk-admin-reseller-panel-1mj04cf/
