Go to the main window, left "tree" panel, right click on the Quick Paste group, and choose "Edit this Group"
Then in the SQL edit box you'll see something like: "NOT (IsInRecyleBin) AND CreationDateTime > DateTimeMinusOneHour"
The offending part of the sql that is causing what you are experiencing is the "AND CreationDateTime > DateTimeMinusOneHour" part.
Try maybe changing it to
"NOT (IsInRecyleBin) AND CreationDateTime > DateTimeMinusSevenDays"