The add-on coerces users to download a companion app. The video files for which it suggests it's companion app is required are easily downloadable by the direct http address of the video, proving further that the app uses disinformation to achieve its goal of installation of its "companion app".

The companion app analysis is shown here which contains a range of malware activities;

Malware the add-on attempts to make users download; https://github.com/aclap-dev/vdhcoapp/releases/download/v2.0.10/vdhcoapp-2.0.10-win7-x86_64-installer.exe

https://hybrid-analysis.com/sample/d0840f71cd86f68883e390efbacf304568a78cabfb3df7357ef73eb7fa2eb45b

https://hybrid-analysis.com/sample/a0676a9cd8b6a70e7c113d55b53f07ee96d1560c7e18d7c2b125d529a08085f5