Hi,
This looks like good information, thank you. My email is working, it is simply that I do not know how to activate the mail shield. The same is true for all the shields, file system and web shield, too. I do not know how to use them.
I followed your instructions to get to the option to uncheck the "Enable IPv6" but, since I am able to use email and unable to use the mail shield, I decided to wait and seek further advice before potentially sending myself down a hole...