Unable to Check Backup Media - alert firing when backup media stored on network location

The "Unable to Check Backup Media" alert is firing for a cluster I'm monitoring in Foglight (AlwaysOn Availability Group), that is performing backups on the Primary but writing them directly to a network share. The backup job works perfectly fine and the backups exist at the intended remote destination, which is a file share on another Windows Server.

What configuration is required to enable Foglight to be able to confirm the backup exists and is available and not throw this alert?

Thanks.