I was going through plugins Aternos provided and one of them was Survival Plus but it's was a outdated one and doesnt function which really needs a change so people can get their plugins working properly. I recommend changing it to a better one.
Here a newer and up to date version of Survival Plus that Aternos isnt providing and suggestion wont register:
Survival Plus - RECODED - Making Survival Fun Again! | SpigotMC - High Performance Minecraft
Remove this older outdated version that Aternos is still providing:
SurvivalPlus (Survival+) | SpigotMC - High Performance Minecraft
Please fix this issue. I want to be able to make a survival server with my friends and have fun with this.