Google Search Console has identified that your site is affected by 3 Mobile Usab

Two days ago, I updated WordPress from version 5.3.3 to 5.4.1. I also updated my plugins to the latest versions. Now I’m getting the following google Mobile issues
“Search Console has identified that your site is affected by 3 Mobile Usability issues:

Top Issues
The following issues were found on your site:
Text too small to read
Content wider than screen
Clickable elements too close together “

Here are the URL’s that were identified:
https://pessolutions.com/about-our-founder/
https://pessolutions.com/lean-material-handling-sos/
https://pessolutions.com/posts/
https://pessolutions.com/tag/job-shop-5s/
https://pessolutions.com/educational-program

I’m wondering if the issue is with my theme and it not being 100% compatible with the new release of WordPress?
FYI, there were no new updates to my theme. Also, there were no mobile issues prior to Wednesday.

Any suggestions or fixes?

Thanks,
Hank

The page I need help with: [log in to see the link]