Thanks guys...as I can see in guideline for Nginx there's three files (all PEM but with different label). When I created and bought new certificate, there was only one file that I have received for Nginx (bundle.crt file). When accessing Other webserver folder there are 4 files:
domain_name.crt
root.crt
issuer.crt
cross.crt
Additionally, there is also private key that I have saved upon creating crt file before I bought the certificate.
How can I convert these to match these three files in PEM for 3CX, it does not make sense to me. What can be done?
Thanks again in advance.