SpigotMC Plugin is broken (ChestRegen)

Firstly, I am on a 1.8 server and ChestRegen (on Spigot) is for 1.7, 1.8 and 1.9.
Aternos does not tell you which version of the plugin is for which version of minecraft.
I have tried to download every version so far and none work. When I type up a command that is from the plugin (the commands are on Spigot)
On some versions it says Unknown Command, type /help for a list of commands, and on some others, I type the same command and it says nothing.
Also, when I try to access the config.yml page, on some versions it takes me to the SpigotMC website and says 'access denied, please login'
This plugin is well and truly broken.
Can Aternos please fix this (The Spigot one)
Thanks!
btw, I was the one who requested this plugin because I needed it so can it be fixed soon?
(I haven't checked the server console to see what it says after I type a command so there is a chance i was being dumb and forgot entirely about the console. If that is, SORRY)