If you don't have any requests showing in your reports, then it could be that your customer accounts are set to "Not Paying". This means they won't show in your reports by default. You can check this by clicking "Customers" in the left-hand navigation and looking at the "Status" column.
Non-paying customers are placed in the "Free Triallers" report and won't show up in the Customer SmartList.
If active customers are incorrectly set as "Not Paying", it suggests there's an issue with how you integrated. Check that your default setting for new customers is "Paying". If not, you should consider changing it.
It might also be that the account values are causing customers to be filtered out.
Check your filters by opening the "Account filters" tab and setting them to:
Account Status — Any
Account Monthly Value — Ignore
Account Activity — Any
This will mean every customer shows up on the report.