Hi,
A few days ago, while trying the Google Search Console, I have found that the home page of my site https://inforoses.com was not being indexed because it had noindex,nofollow robots meta tags.
My site is the main site of a multisite network with only it active. It is also a multilanguage WPML site with main language CA and additional languages ES, FR and EN.
The noindex,nofollow robots meta tags are present only in the home page in the main language CA, not in the additional languages ES, FR and EN.
Yoast SEO was properly configured for the home page in all languages without the noindex,nofollow tags.
Therefore, I had no other option but to deactivate one active plugin after the other and test again until finding the plugin causing the problem.
And it happened that the plugin causing the problem is Invoicing.
I tried twice to be sure:
1) Deactivating the Invoicing plugin made the noindex,nofollow robots meta tags to disappear from the home page in the main language CA.
2) Activating again the Invoicing plugin made the noindex,nofollow robots meta tags to appear again in the home page in the main language CA.
I hope you can solve the issue.
I look forward to your news.
Thank you very much for your attention and help.
Best regards.