Hey @verciani,
Thanks for reaching out!
For some reason, Google doesn’t fetch the mentioned page properly during the test, please see.
As you can see on the above screenshot, according to Google, the mobile version of your page is broken and not responsive but that’s not the case – the page is displayed just fine on mobile devices, please take a look.
The Primer theme is a mobile-friendly theme, and this is how Google analyses the Blog page on one of my test sites that uses Primer. As you can see, Google fetches my site correctly and the page is mobile-friendly.
The reason for your issues is most likely related to some of your plugins so please deactivate them one by one until you determine which one causes the issues. Also, it might be that your active CDN doesn’t allow Google to render the mobile version properly so that should be checked as well.
This is where you can test if your pages are mobile friendly:
https://search.google.com/test/mobile-friendly
I hope this helps! ??
Kind Regards,
Milos | GoDaddy