[Version: 2.5.3] Click on Download-Link redirects to Homepage

Hey there,

I’m aware that this issue was solved before, but for older versions of this plugin. I upgraded to v 2.5.3 yesterday and today a click on a download-link redirects me to the homepage. Example: https://lycanthropic.de/?lease=0098b022f1afdb7c640979ad4781237b

Or go to https://lycanthropic.de/downloads and enter code IFH24U68

Environment:
php: 7.0.33
WP-Memory-Limit: 512 MB
Wordpress: 5.0.3

I’m thankful for any hints how to solve this problem.

Thanks and best wishes
Chris

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