I see in the LBML keyboard binds that there are 3 keys selected - green blue red.
In the entropia program it is enough to use one key to drop a probe after selecting ore, enmatter or treasure in the green interface window.
My question is: must I use 3 diff keys for the LBML to work properly - or is it OK to just use 1 key inside entropia?

you should be able to bind 1 key to drop for all 3 resources ..

if you use the auto drop detection no keybinding is necessary