Certificate RDS 2012

Hello,

I have a problem with certificate on RDS 2012.

I have :

2 RD Gateway
2 Connection Broker
2 Session Host
1 RD WebAccess

The url of gateway is : rdgwfrm.mydomain.ch
The url of ClientAccessName of the Connection Broker is : rdcbfrm.mydomain.ch
The url of my RD Webaccess us ; rdwa.mydomain.ch

I have an internal domain AD : corporate.lan

I have a wildcard certificate of mydomain.ch. 

If i check the certificates states on the deployment properties, I have this : 

All of the roles uses my the wildcard of mydomain.ch

I have set my wildcard for my RD Session Host with this command :

wmic /namespace:\\root\CIMV2\TerminalServices PATH Win32_TSGeneralSetting Set SSLCertificateSHA1Hash="Thumbprint"

First Problem :

Why my session host keep showing the internal certificat ? Do I need to assign my certificate manually on my servers ?

Second problem :

When I try to connect on my iPad with the official app , I have a certificate error. It's says that rdgwfrm.mydomain.ch doesn't match *.mydomain.ch. And same error for rdcbfrm.mydomain.ch. The wildcard is not supported on the IOS Apps ?

Thanks !