Hello Pit,
We have conducted a check of your website on our personal mobile device and have not encountered any issues. It is likely a cache issue on your end.
We recommend that you clear your browser cache and check back. We have also prepared a video for your reference. We suggest that you watch it in its entirety for a better understanding. https://www.veed.io/view/1f5fc626-7849-47de-af99-330921a102f1?sharingWidget=true&panel=share
Best Regards,
8Theme’s Team