How to fix a paused account
As a Google Ad Grants recipient, your organization is required to actively manage your AdWords account by signing in at least once a month. Any account left unmanaged or unattended over 30 days is subject to automatic pausing without notification.
If this happens, you can resume a paused campaign at any time. Once you sign in to your account and resume your campaign, it will be immediately restored to active status and your ads will be eligible to begin running.
Please note, however, that if you repeatedly break the policy on active account management, your account may be cancelled and removed from the Google Ad Grants program.