Installing reactor on linux

The documentation says:

Note: Since Resolve 15 does not support the use of a .fu file for creating menu entries, it is recommended that Reactor for Resolve be installed only by the automated Lua installer script. This is due to the fact there are more files to copy in place so a manual installation would be more complex to describe and support.

Unfortunatelly the visual installer does not work. It just says "download started" and hasn't moved since 10 minutes. There is no disk write happening or cpu usage detected. Something is definitely wrong with the visual installer