Hello,
Thank you for contacting us about an "Insecure call error in index.html file." When I looked at your certificate, it seems to be signed with outdated protocols.
Specifically, you are using sha-1, it should be sha-2 instead. I recommend re-keying your CSR with this updated cipher suite, and regenerating/reinstalling your SSL.
Let us know if you have any further questions.
Thank you,
John-Paul