It is probably a very small issue and I just do not know where to find the solution.
Basically, I want to add my Next Cloud Account to my Ubuntu 19.10 via Online accounts Settings. I already added my Google Accounts and Ubuntu Single Sign-on account. The Nextcloud account is asking me for a “Server” alongside my Username and password. Where and what is this server? It is an IP address or what? I cannot find any documentation about it. Thanks for the help.