Upgrade to Featured Not Automatic
I have noticed that when users pay to upgrade their listing (either to Featured in Category or Featured on Home Page) that whilst the payment goes through, and the payment order is created in the back end, the listing itself is not automatically updated to reflect the new upgrade.
For example - in the most recent order, an existing listing was upgraded to Featured on Home Page, but the relevent fields in the listing were not updated and remained empty. The fields had to be changed manually to give the listing its 30 days upgrade.
This also affects the Featured in Category upgrade too.