Hi, I have downloaded the newest mobile apps for confluence in my iPhone cellphone.My iPhone iOS version is 11.0.3.When I input the site URL of Confluence server and try to connect it,it prompt an error message like "This app requires HTTPS .........". I have confirmed that the server had setup the HTTPS correctly.I can access the confluence website normally by using https on PC.And the Certificate Authority of SSL certificate is also obey iOS requirement. The CA is Symantec Class 3 Secure Server CA which is in the list of available trusted root certificates in iOS 11. By the way,I can connect the confluence server correctly by using my Android phone which is installed a Confluence Server beta version. How to solve this problem?