I don’t know the exact set-up for coventry.domains, but if you’re seeing cPanel when you log in I believe you will not be able to install the online version of the Adapt Authoring Tool at your online space. The applications that make the authoring tool run (like MongoDB) that are required are not able to be installed on shared hosting. It was for this reason the Reclaim Cloud service was very exciting for me to see this past summer. The MarketPlace in Reclaim Cloud performs the same one click install process you’d be used to with Installatron at Reclaim Hosting in cPanel.
I personally tried a few times to follow the Adapt Authoring Community guides to install Adapt manually and found it pretty troublesome, so the one click install was a total saviour.
If you’re set to try out Adapt, I definitely recommend checking out Reclaim Cloud, or checking the Adapt Authoring Community Course: Adapt Learning Community for instructions to install a desktop version. I personally avoided the desktop version because I’ve only got one machine at home and terminal is a bit intimidating for me personally.
Best of luck!