I deployed SSL on my website but the SSL provider said i need to configure it inside source code

what exactly i should do
below i paste message from SSL provider

""""Hi,

I see your SSL certificate has been deployed, but you are serving mixed content, which is why you do not see the padlock.

Mixed content errors mean that your website is being loaded over https but some of the resources are being loaded over http. To fix this you will need to edit your source code and change all resources to load over a relative path, or directly over https.

How do I fix the SSL Mixed Content Error Message? - https://support.cloudflare.com/hc/en-us/articles/200170476-How-do-I-fix-the-SSL-Mixed-Content-Error-Message-

Damian
Support Engineer | CloudFlare"""""

Kindly advise

@ashwrote
What is your URL?

adzela.com

@ashwrote
You do not have HTTPS set on your osclass.

yeah thats the problem
how do i set it?

@ashwrote
You need to check osclass documentation, it is not theme problem or functionality.
HTTPS must be set to whole osclass.

ok thanks for support
i will contact them