Configuring certificates

I spent two days reading and couldn’t get my server work.

Now I have this warning “Found RSA certificate that is not valid for the server domain” after importing my certificate (I have two from godaddy)

I followed different guides and after that when I access to https://mydomain:9091 the browser says “This webpage is not available”

I tried import the certificate through import-certificate.jsp but It throws: “There was an error one importing private key and signed certificate. Error message: org.bouncycastle.asn1.pkcs.PrivateKeyInfo cannot be cast to org.bouncycastle.openssl.PEM Key Pair”

Can you give me a hand?