Activate Volvo on call

Moin together, I’m going to be aff… Have a used XC90 (12/2015), which tells me at the start, Volvo on call is disabled I should turn to the friendly one. Said. You didn’t really know if it was already activated before (then it can only be the selling dealer). My objection with d set, it should be online in 10 minutes. In my opinion, nothing has arrived. If I press the call button, you have to press the activation button for 2 seconds – nothing happens. Can someone tell me how to activate this on call? Best regards Lars