i have a panda 13 plate 4x4 its just started having problems restarting from hot and also i replaced the battery recently and the mileage keeps flashing .
Flashing ODO is indicative that the Blue & Me module has failed (can you connect your phone?) this is not unusual! When this unit fails it often provides a fairly large parasitic drain on the battery which may be what led you to replace the battery (it could flatten a decent battery in a couple of days without using the car).
Search on here using the search function for Blue and Me issues.