Go to "my dashboard" and look at how many hours have been validated, and how many are to be validated. You can then see the details of the hours added at the end of the page.
To look at the hours added out of Simplyk, click on the tab with the name of your school that is on the upper right corner. This will allow you to follow up what you have added!
Finally, send an email to the organization by clicking on the box "remind".