Coolant

Hello you love , I need a advice ! I drive since March 2020 a Range Rover Sport from 2013 last facelift before new model ! I had about a year ago in a workshop the coolant container replaced , because of notification , until then also everything ran Now weeks ago he went back and again into the emergency run , had then water after filled , then was again good ! Now the message coolant came back low , since I now have to have the complete container replaced again , the Display was exactly 3 days away , then it started again ! Meanwhile comes and goes the message constantly , the container itself is full ! He loses no liquids … In the emergency run he goes NOT anymore ! But the flash is annoying ! So the container probably did not make any problems At the last read out , the computer showed air masses knives , there he went but emergency run Has who ideas and can help ? What is broken ?