DL switch is not referring to Link-16 but to some other system which is not implemented in the viper block we have here, AFAIK. Therefore it is a dead switch without any functions. The Map switch is also not necessary.
Without a track it is not possible to see what the issue is. The screenshots do not help as they do not show, i. e. the align status of your plane or if it is an airborne start or cold start on the ground.
Badlego's post in Datalink doesn't work was marked as the answer