Mobile: Link does not open

Hi! Since the new update I have problems on mobile. The glossary is displayed correctly, but when clicking on a glossary link the glossary page won’t open. Only the tooltip is shown. The problem exists only when visiting the page on my mobile device. On my desktop PC everything works fine.

### Begin System Info ###

            ## Please include this information when posting support requests ##

            
            Package Version:                1.1.4
            Multisite:                No

            SITE_URL:                 https://www.seo-ulm.com
            HOME_URL:                 https://www.seo-ulm.com

            WordPress Version:        5.8
            Permalink Structure:      /%postname%/
            Active Theme:             Spacious 1.7.8
            
            Registered Post Stati:    publish, future, draft, pending, private, trash, auto-draft, inherit, request-pending, request-confirmed, request-failed, request-completed, acf-disabled

            PHP Version:              7.4.19
            MySQL Version:            5.7.34-nmm1-log
            Web Server Info:          Apache

            WordPress Memory Limit:   256M
            PHP Memory Limit:         256M
            PHP Upload Max Size:      200M
            PHP Post Max Size:        200M
            PHP Upload Max Filesize:  200M
            PHP Time Limit:           300
            PHP Max Input Vars:       3000
            PHP Arg Separator:        &
            PHP Allow URL File Open:  Yes
            WP_DEBUG:                 Disabled

            WP Table Prefix:          Length: 3 Status: Acceptable

            Show On Front:            page
            Page On Front:            SEO Ulm – SEO Agentur in Ulm – SEO, Webmarketing & Webdesign (#2981)
            Page For Posts:            (#0)

                        WP Remote Post:           wp_remote_post() works

            Session:                  Disabled
            Session Name:             PHPSESSID
            Cookie Path:              /
            Save Path:                /usr/share/cgi-fpm/w0135e57/tmp/
            Use Cookies:              On
            Use Only Cookies:         On

            DISPLAY ERRORS:           N/A
            FSOCKOPEN:                Your server supports fsockopen.
            cURL:                     Your server supports cURL.
            SOAP Client:              Your server has the SOAP Client enabled.
            SUHOSIN:                  Your server does not have SUHOSIN installed.

            ##COMPATIBILITY

                            Package Version		1.1.4    OK

                WordPress Version		5.8                OK
                Permalinks enabled		Yes                OK
                PHP Version		7.4.19                OK
                mbstring support		On                OK
                intl support		On                OK
                PHP Memory Limit		256M                OK
                PHP Max Upload Size		200M                OK
                PHP Max Post Size		200M                OK
                PHP Max Execution Time		300                OK
                PHP cURL		On                OK
                PHP allow_url_fopen		1                OK
            
            ##ACTIVE PLUGINS:

            301 Redirects: 2.70
Advanced Custom Fields: Options Page: 2.1.0
Advanced Custom Fields PRO: 5.9.5
All In One SEO Pack: 3.7.1
Animated Number Counter: 1.3
Asset CleanUp: Page Speed Booster: 1.3.8.1
Breadcrumb: 1.5.24
CM Tooltip Glossary: 3.9.20
Contextual Related Posts: 3.0.7
Custom Permalinks: 2.2.0
Disable/Remove Google Fonts: 1.3.1
Disable Lazy Load: 1.4
DSGVO All in one for WP: 4.1
EditorsKit: 1.31.5
HashBar - WordPress Notification Bar: 1.2.1
Imagify: 1.10
Inline Related Posts: 3.0.6
Lazy Load - Optimize Images: 2.3.4
LuckyWP Table of Contents: 2.1.4
Ninja Forms: 3.5.7
Print, PDF & Email by PrintFriendly: 4.1
Reading Time WP: 2.0.10
Schema & Structured Data for WP & AMP: 1.9.83
Shortcodes Ultimate: 5.10.2
Simple YouTube Responsive: 2.5
Smart Slider 3: 3.5.0.10
Ultimate Addons for Gutenberg: 1.24.2
Ultimate Post List: 5.2.6
UpdraftPlus - Backup/Restore: 1.16.59
WP-Sweep: 1.1.5
WP Author Bio: 1.5.5
WP Fastest Cache: 0.9.3
WP Last Modified Info: 1.7.7
            ### End System Info ###

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