Learn more about this change here.
For help regarding Aternos, we recommend you to visit our support center.
----[About PlotHider]----
Link: https://www.spigotmc.org/resources/plot-hider.20701/
Description: Hide or deny the plot from another players
----[About PlotsMenu]----
Link: https://www.spigotmc.org/resou…otsmenu-opensource.14326/
Description: Use the GUI instead of command
Hope someone add those 
Well, looking at them PlotHider is outdated but PlotsMenu should be fine (unless stated otherwise 
)
plotsmenu isn't possible that its 1.12 because 1.12 came out 1 or 2 months later after july of 2017
Denied
There are plugins needed that are not available on Aternos and can't be added.
