8功能对于特定应用程序不可用

Hi I have an app which is also live, For the next version I want to implement deep linking for this I have to enable Associated Domains. I have enabled it at bundle Identifier also created new provisioning profile downloaded and double clicked it. But still 8 capabilities missing, Associated Domains is one of them. Please someone help how can I get Associated Domains under capabilities. Only attached options are there.Hi I have an app which is also live, For the ne