Where you find out whether the installation is well, and what happened when it was not.
- System Health
- Runtime and extension problems, folder permissions, the license state, and whether the automation completed in the last 24 hours.
- Activity Log
- What the system did.
- Admin Log
- What people did. Only useful if every administrator has their own account.
- Email Log
- Every message generated, and whether it was sent.
- Module Log
- Requests to and replies from payment and other modules.
- Gateway Log
- Payment callbacks as received, under Billing.
- Mail Import Log
- What the mail import brought in and rejected.
The cron warning means what it says
"The system cron does not appear to have completed successfully within the last 24 hours" clears only after a successful daily run.
Full guide
The complete reference is Platform and maintenance in the WBAMS documentation.