From your system information there I’m guessing you’re using Hostinger?
Please note that this is the forum for AMP, and not Hostinger support, so any refund-related stuff would need to go through their support on their website (the panel is not their website).
In terms of setting up a modded server, you should not be doing it as root, and you should be doing everything inside the panel. See this guide here for more info.
https://discourse.cubecoders.com/t/setting-up-a-modded-java-minecraft-server/26535