Trying to make Masked Email work

@valdesan

We've been tracking sites where the masked email feature is not being presented, as expected. I'll be sure to add theguardian.com to the list of sites affected by this. In the meantime, the best way to achieve this is to create a masked email directly from Fastmail and pasting it into the fields. I realize this is not ideal, but should allow you to change your contact info for the guardian.com accordingly.