Connection not private issue on website

I am in need of a freelancer who can help me with a connection not private issue on my e-commerce website. I am experiencing this issue specifically on my e-commerce website. I can provide the exact error message that I am receiving.

I am looking for a freelancer who can not only fix the issue but also provide an explanation of why it happened.

Ideal Skills and Experience:
- Experience in troubleshooting and fixing connection not private issues on e-commerce websites
- Knowledge of SSL certificates and website security
- Ability to communicate technical explanations in a clear and understandable manner.