Vauxhall crossland headache

Have 2022 1.5 crossland diesel when attempting to start have multiple error messages starting with engine malfunction then safety system malfunction then more and more one after another car will not start will not turn off for a good while radio comes on some times sat nav starts up has been into dealer twicw they replaced ecu under warranty and after 5 days did same thing again any ideas would be gratefully received

 

Is the battery ok? Realise it's not old but a low battery can cause all sorts of errors etc with modern electronics's.