We do not maintain the projects, merely repackage them.
Occasionally the changes we ship cause conflicts, but it is very very rare (see x2go and .bashrc). It's also not possible for us to know if anything has been changed post-install that could be affecting your installation as well. If it used to work and now doesn't, it is unlikely to be a problem that QuickBox has introduced.
The best place to start with troubleshooting is by enabling your logs (
mono Jackett.exe -t -l) or checking if
systemctl status jackett@<username> has any info for you.
You can try posting the logs here, but really the best place for that is the Jackett project repository. The devs there will be far more knowledgeable regarding their project than we are