Where do I set the Certificate for the https://server:54899/mfa/totp webpage?

Hi

I have started testing MFA for the Secure Gateway and Document store. This is needed since the Server have more Open Ports on the FW and and we need MFA for Files with saved passwords.

the mfa/totp page is not SSL, it is using the selfsigned certificate. I have uploaded a Certificate from our Domain, and I have chosen it in the Secure Gateway Configuration.

How do I get it to use my Domain Certificate?