Do you have a appropriate license key for the number of Word Fence installations your are deploying? Have you signed in to your child sites to apply your license? Have you consulted the relevant WordFence documentation?
iThemes Security has been rebranded as Solid Security recently, but our iThemes Security extension still works as expected. We will be updating our extension to reflect the new branding.
Wordfence requires an API key to work even in the Free version. So after you install the Wordfence plugin on the child site, you can navigate directly to it and request the API key from Wordfence plugin UI and activate it.
If you already have the API key (free or premium), you can also activate it in our Wordfence extension. You can do so by going to MainWP Dashboard > Extensions > Wordfence > Options page, then click on Show/Hide Licenses, enter the API keys in the respective fields and then click Save Settings at the bottom of the page.
No I don’t. I was under the impression that MainWP supplied that. I see now that I was wrong. That’s okay though as I believe that I’ll get what I need out of Solid Security (formerly iThemes security) free version. Updraft free works well too with DropBox.