My homepage URL was removed from Google's index. When I run the live test I receive Availability - URL is unknown to Google - with N/A for all other results. (screenshot attached)
Does anyone what might be causing this?
I have checked:
Checked:
- Manual actions - none
 - Security issues - none
 - Robots.txt - index, follow
 - Canonical - self-canonical link correct
 - Indexability staus through Screaming Frog - all 200 & indexable
 - SEMrsuh site audit is functioning correctly again - no issues there that would affect homepage availability