Hi, everybody.
I have on-prem SharePoint 2013 and K2 Five 5.2 integrated with it.
SharePoint has a web application on HTTP and an address based on the server hostname. K2 is also on HTTP and hostname derived, but also on HTTPS and FQDN.
How to switch both environments to HTTPS and FQDN and still keep K2 integration with SharePoint, also all applications with running processes, functional?
I know how to switch to HTTPS and FQDN SharePoint itself, how to reconfigure K2 itself to HTTPS and FQDN as well. But where to adjust their integration with each other is not clear to me.
I know there are hidden K2 lists in SharePoint where there are links to K2 URLs and URLs of site collections where K2 is activated, but in K2 those links to SharePoint seem to me to be written in a lot of places in the database.
Does anyone have experience on how to do this, a link to a great article describing this that you'd like to share?

Thank you in advance for your advice. Pavel