disappear after "better wp security"

hi, I have installed this plugin some months ago. And it worked perfectly. but today (some hours ago, about 7) I have installed another plugin “better wp security” (because i notice from wassup that many ip went to visit wp-login.php) and then i see that wassup is “clean”, no records, no visitors, nothing. empty….. coincidence? i dont think so. i’m not expert about code, and i can’t understand the reason why now wassup list disappears… thank you

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