DEF problems. 2016 f-pace

Hello. My usual forum is the e+type one but I was hoping someone here might be familiar with this problem. My daughter has a 2016 diesel f-pace. This is the eighth time in the last 3 years she has had to take it back to the dealer for the DEF massage below. It has only ever used dealer supplied DEF. If anyone has had experience with this problem I would love to hear if it has been solved for you.