domain reserved text in header weird error(hack?)

I’ve got a weird problem with my site.

1. all of a sudden the text “domain reserved for future use” has appeared in the header of every page.

my hosting say it is not a problem with them, i’ve tried removing plugins but this did not help.

this is a weird one and i’m wondering if this was a hack?

Also two other issues appeared at the same time but these have been resolved.
2. the robot text had some bogus text referencing welovewp.com. I removed this and put back the correct text within the robots.

3. the site was blocked from search engines via the search engine visibility in privacy settings. however once i had changed the robot text as above logged out then logged in the search engine visibility had moved from privacy.php to options-reading.php. I was then able to unblock search engines through reading settings.

very strange

any ideas with problem 1 ?