#3 can't install home-assistant-hacs

OS : ubuntu 22.04.1 LTS
home-assistant-configurator 0.4.1 101 latest/stable giaever-online
home-assistant-hacs 1.0 104 latest/stable giaever-online
home-assistant-snap 2022.8.7 523 2022.8/stable giaever-online

after installing both snap (home-assistant-snap and home-assistan-hacs), and connecting them together as explained on the git, it is not possible to add the HACS integration through the web-UI (see error message below).

Your Home Assistant is, as stated, to old. Update to a newer version. :)