By any chance, did you miss the radio button for “Choose a certificate”? The Certificate dropdown will show you the first certificate it sees, leading you to believe that it will use that one, but it does not use it unless you select the other radio button.
If you have correctly selected that, then you can try viewing the YAML of the Ingress and make sure that it has the correct settings.
- host: servername.mydomain.com <<<
- hosts: <<<
- servername.mydomain.com <<<
secretName: cert-wildcard <<<
- ip: ip1
- ip: ip2
Lastly, I presume that you are browsing to the actual hostname
test.sbox.mydoamin.com and not by IP address. Ingresses will only work correctly by going to the hostname.