RankMath gives incorrect feedback?

Hello,

I installed RankMath yesterday as replacement of Yoast. However, the latter seemed to have worked better. A few things do not make sense and I have looked at your set-up guides but could not find solutions:
1. Links ratio shows 7 internal and 53 external links???
2. ‘images lack ALT attributes’: I set up the rankmath auto feature for this, shouldn’t that avoid this message?
3. ‘search engines can’t see your website’: seems everything is set to index and at WP setting>reading I have unchecked the tickbox?
4. ‘No canonical link tag found on your page’. It seems that pages do have the canonical link tag present – I did a quick check on some including the home page and it is all set correctly.
5. ‘Your page contains noindex meta or header.’ As mentioned, not the case.

I really hope you can help me here. This way RankMath just doesn’t work for me.

What I can add to this, is that RankMath was installed just before I transfered a new domain name to be the identifier of my site. Also, I have installed cloudfare which forced the use of ‘www’ with my domain while it used to be just ‘estrocare.nl’.

I really hope you can help me. I am a novice and a built a new site because my old environment was way too limited for SEO ,,, thanks for your help!