Change from 3CX FQDN to my own when changing from Standard to PRO

[jakthree]

I have 3CX Standard Annual v15.5.15502.6 Linux ISO.
During first time setup - Configure FQDN, I choose 'I need a 3CX FQDN'. I don't remember if 'I have my own FQDN' was selectable. I now want to use my own FQDN and SSL certificate when I upgrade to PRO version. I will backup standard version before purchase/upgrade to PRO version. I do not want to reinstall 3CX from scratch.
During the standard->PRO version upgrade, does the PRO version allow me to change my own FQDN and SSL certificate?
Thank you,

 

[cobaltit]

There is no 'upgrade' and you'll want to do this in two steps to make life easy. So first thing to do is simply upgrade your existing key. Then your install will see you have Pro and unlock the features (can refresh the license information or restart the services/server). Once that is done you'll want to take a backup without license key or FQDN, uninstall, release FQDN, reinstall/restore and provide your FQDN and cert. Why you'd want to go through all that headache is beyond me but to each his own. 3CX FQDN works just fine for me.