After installation of a wildcard SSL certificate into the certificate store, the certificate does not appear in the IIS certificate list for use with site bindings.
If you are using Godaddy as your certificate authority, and you are running into this issue; All you have to do is Re-key the certificate. I tried the above certutil -repairstore my "paste the serial # in here" but the system wanted me to use smart card for authentication. (Running IIS10 on Server 2016 and 2012R2)
When I Created a Certificate Request, gone through the process of Re-keying and gone through the process of "Complete Certificate Request" I was able to sucessfuly configure "Bindings..." without the certificate disappearing.