Works on

List of hosting and server providers that we tested this app on. App would work on many more providers that meet our requirements. 

cPanel:

https://www.inventivehosting.co.uk/

DirectAdmin

https://www.hekko.pl/

VPS / Dedicated

https://www.hetzner.com/cloud – Ubuntu 18 LTS

https://www.hetzner.com/ – Dedicated server with Debian 9