Depending on what database you use its a different path to the exact table but the tables should be named the same no matter what database you use as far as i know.
If MS-SQL as in my case, the path would be
Openfire[the database name].dbo.ofProperty, where there should be 2 tables, one “name” and one “propValue”, here look for the row with “name=xmpp.pep.enabled” and “propValue=false” and delete that row from your database.
Then reboot the openfire server and it should be gone from OF.
If you have mysql the database path dont have the .dbo. and is then named “Openfire.ofProperty” with the same column names and so on
If you have any other datasource where the settings is saved then i cannot help you.
The last solution i would know is to rerun the installation and hope that the datasource is nuuked, but then all of your settings will be nuked and you have to remake everything so i would NOT suggest that you do that…