Hello,
I have the free version of this plugin.
When I hit on "Scan a Wordfence Scan" it run for 5 secs, then it come back to "Scan a Wordfence Scan", nothing appear in the "Scan Summary".
I tried to change the "Maximum execution time for each scan stage" like your support page and deactivated my maintenance plugin. The admin-ajax.php is 0644 CHMOD.
Can you help me please? Thanks