Was about to buy Premium until this happened

Greetings,

So we installed the free version on our multi-user WP installation, and network-enabled it. Upon the initial configuration, we had to allow write permission for /wflogs, and successfully ran the first scan. All good.

However we subsequently noticed that none of the pages under any users’ domains were working; all were ‘page not found’. We decided to remove the plug-in and all data, so per instructions we checked the box under ‘Options’ to remove all associated data, then deactivated the plug-in.

At the moment we clicked to deactivate the plugin, we got an http 500 error – nothing was accessible on our entire network, including /wp-admin. We restored the .htaccess file, and everything became accessible again. Phew.

*However*, it wasn’t a clean uninstall (probably because of the 500 error we got right after clicking on ‘Deactivate’). For example, now we are seeing this under plug-ins:

1) How can we rid our database of all the Wordfence data and files?

2) Why would Wordfence break all the pages under all domains (the 404 errors)?

We’d like to purchase the Premium version but we’d like some insights on how to resolve these issues first with the free version.

If it helps, we had 301 redirects for several domains on the network. While the redirects continued to work, all pages (including the destination pages) were still 404 errors.

Thanks in advance for your help.