I Cannot install RTE tempo using HACS

Hello
From HACS integration list, I cliked on download
the files are now in /homeassistant/custom_components/rtetempo
After reboot, but the application does not start, does not ask for identification, The RTE page is almost empty

anything I should know ? or test ?
Thanks

Hello
I did not solve this problem but there is a solution from Roumano, doing it from scratch, here :

It works fine