@adabob thanks for your feedback, appreciate that. If you deactivate the new hardening features, the code that handles this is not loaded at all. So just disabling all hardening features will get you back to the basics of the free plugin.
you can then enable ‘dismiss all notices’ which gets rid of the notifications.
Regarding the other plugins: these are entirely separate plugins which you can deactivate if you don’t need them.
Deactivating the premium add-on will revert its changes. But you could also try disabling all security headers one by one first. If pro is causing issues, in most cases it is a too strict configured security header. I’d be happy to help with that of course.
for in-depth help with the security headers it might be easiest to contact us directly at [email protected]
hope this answers some of your remarks!
Rogier