mobile usability

Dear Hueman-Support-Team!

The “Live URL-Test” of Google Search Console says, that my site http://www.zugvoegel.blog is not optimized for mobile devices. It says, font size is too small and clickable elements are too close to each other.

I use Hueman Theme (NOT the pro version). I do NOT use elementor or another additional builder and have made no changes to the theme, which is supposed to be fully responsive (the reason why I chose it). I use the font Titillium Web, Self Hosted and already set the font size to 20. I already tried another font, the same result. Of course I have enabled the responsive layout in customizer.

In the mobile-preview the font size seems quite ok, but on my smartphone the font of the body text is really tiny. When I change the font size in customizer, it has no effect on the appearance on my smartphone. No matter how I set the font size, the body text of my blog-posts stays the same size.
I have the impression, that when I refresh my site, for an instance, not even a second, the size of the font is bigger and then settles again to the tiny size.

Can you give me advice what to do, to improve the mobile usability of my site regarding the text problem and possibly also the problem with the clickable elements, which are supposed to be to close? Regarding the latter problem I have no idea at all, what to change.

THANKS A LOT,
CHRISTINE

# SITE_URL: https://www.zugvoegel.blog
# HOME_URL: https://www.zugvoegel.blog
# IS MULTISITE : No

# ACTIVE THEME : Hueman 3.7.20
# WP VERSION : 5.9.1
# PERMALINK STRUCTURE : /%category%/%postname%/
# 4 ACTIVE PLUGINS :
– GDPR Cookie Consent (version 2.1.1)
– MailOptin – Lite (version 1.2.45.0)
– Yoast SEO (version 18.2)
– YYDevelopment – Tag Manager – Header, Body And Footer (version 3.0.0)

# PHP Version: 7.3.33-1+0~20211119.91+debian10~1.gbp618351
# MySQL Version: 5.7.34-37-log
# Web Server Info: Apache

# WordPress Memory Limit: 40MB
# PHP Memory Limit: 256M
# PHP Upload Max Size: 256M
# PHP Post Max Size: 256M
# PHP Upload Max Filesize:256M
# PHP Time Limit: 300
# PHP Max Input Vars: 5000
# PHP Arg Separator: &
# PHP Allow URL File Open:Yes
# WP_DEBUG: Disabled

# Show On Front: posts
# Page On Front: (#0)
# Page For Posts: (#0)`

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