Thank you so much – that appears to have fixed all of the issues!
Can you confirm for me which third party plugins you deactivated? I only see a few in there: Akismet Anti-Spam, Embed Calendly Scheduling, Pixelwars Core Shortcodes (your plugin, I’m assuming?) and Tutor LMS and WooCommerce (both installed by theme and not activated yet by me)… so I’m wondering if it was Akismet (wasn’t previously enabled) or Embed Calendly Scheduling?
Same here – despite making no content changes to my site in past 3 weeks, several portions of my home page are now wonky: content not appearing on desktop view (only mobile) yet when I resize desktop browser window, the content appears… and large spaces and gaps where there never used to be any, etc.
Hopefully the developer can provide an update to theme to resolve (maybe a conflict with WP 5.6 somehow?)