Audio Conference Link missing

I have received an invitation for a Skype Meeting (this normal thing with dial-in numbers etc.) but the link to the Online Meeting (Web-Application) is just missing. So, in fact the invitation is not usable in eM Client to participate in the online meeting. 
I am using a google account for email and calendar. Logging into google calendar the invitation is complete, including the links - no problem - just as it should be. 
How can we convince eM Client to handle such invitations correctly?

What protocol did you use to set up Em Client?