Hello @Sammy !
Hope you are having a great day!
Thank you for asking a Question! We are Glad to Assist you!.
If you have purchased an App Service certificate which is private certificate that's managed by Azure.
It combines the simplicity of automated certificate management and the flexibility of renewal and export options.
Refer to these step by step document: Import an App Service Certificate
If you already have a private certificate from a third-party provider, you can upload by following this document:
Upload a private certificate Also, See Private certificate requirements.
Let me know if the above solution resolved your issue!
Regards,
Tasadduq Burney
__
|- Please don't forget to "Upvote" and "Accept as answer" if the reply is helpful -|