Why can't I mirror link to my Pioneer app radio 4 ?

[AC Question]

why cant i mirror link to my pioneer app radio 4 ?

hi ive just got a samsung s6 and want it connect to my app radio but for the life of me i cant get it to work!! im not very tecnical minded but im sure it could be done if my phone was set upright please any help would be really help to stop me getting even more upset

 

[Miguelitico]

yes I have some troubles whit it