This plugin has been removed from all Arch based Linux distros. I use Manjaro but qtcreator comes from Arch repos.
Since me and my team at work love using doxygen, I would like to see this plugin updated to work with qtcreator 6+.
I see this is a team of 5 developers but this repo hasn't been updated in 12 months. I would like to know if this team is still interested and has time to maintain this plugin. If not, then I would like to look into this issue and see if I can help.