INSTRUCTION
If you have Wordfence installed (free or premium), first go to Wordfence Options and scrooll down to the bottom of page. Find and check this option:
Delete Wordfence tables and data on deactivation
Go to Plugins/Installed Plugins, find Wordfence Security, DEACTIVATE and DELETE it.
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Install version you downloaded. Go to Wordfence Options and on the top find:
Your Wordfence API Key
DELETE Key and LEAVE field empty!
Scroll down and click on SAVE OPTIONS.
Done!
Now you have all premium features except Two Factor Authentication, beacause it need to communicate with home server.