I believe this plugin has a UX flaw.
When using the Manual check, the button at the end of the list is "Start Over".
I was checking 50 items at the time, and clicked the "Start Over" 3 times, expecting it would check the next 50 items, and of course, got frustrated with the result. It was only when I changed to 5 items at a time that I could see the "Next 50 items" button, which stays only at the top of the list.
My suggestion would be to have both buttons at both the bottom and top of the list.
I believe this plugin has a UX flaw. When using the Manual check, the button at the end of the list is "Start Over". I was checking 50 items at the time, and clicked the "Start Over" 3 times, expecting it would check the next 50 items, and of course, got frustrated with the result. It was only when I changed to 5 items at a time that I could see the "Next 50 items" button, which stays only at the top of the list.
My suggestion would be to have both buttons at both the bottom and top of the list.