Hi, I have the latest versions of WordPress and your plugin. I have just noticed that when I click "Approve" on an activation key I am redirected to the homepage of my site. When I return to the plugin section in admin nothing seems to have changed for the user.
Its NOT something I am truly worried about I was more curious than anything.
Will there be a time when you create a check box / bulk deletion function for the plugin? Yesterday I got 217 spambot signups and it takes forever to delete them one by one. I could probably wait and use the delete after 30 days function but that means I'll have 6,000 keys floating in the system all the time. Yikes.