@xaocs d the message about the error you were getting.
one of the possibilities is that the CSR needs to come from the Keystore - are you able to regenerate a new cert for the domain? If so, to create the CSR:
keytool -certreq -alias <your domain> -keystore keystore.jks -file mydomain.csr
Now open the mydomain.csr file in notepad, copy the ENTIRE contents. Goto your cert provider, paste in the contents of the .csr, next, select the< your domain> domain.
Copy the generated certificate into notepad and save as <wallet_dir>\conf\ssl.crt
Also download and save the intermediate and root CA certs into the conf dir.