Today, i updated the plugin "Mythic Mobs" on my 1.8 server. I noticed that it seems a bit buggy, so I attempted to downgrade it back to the old version. However, I cannot do that now for some reason. I receive this error message whenever I try to access the MythicMobs plugin page on Aternos, "No Compatible Version Available", when there ARE compatible versions available. I checked the bukkit website and yes, the version I was trying to downgrade to supported version 1.8, as well as other versions too. Help?
Edit: I'm using Spigot for 1.8.8