You can copy/paste the URL displayed in your browser for example in our case it is
https://css.infosysta.com/secure/Dashboard.jspa
.
You can enter your base URL
as
jira.exmple.com
or
https://jira.exmple.com
.
Your site might contain a context path so you need to enter it
as
jira.exmple.com/jira
or
https://j
ira.exmple.com/jira
.
If your instance is an Atlassian Cloud you can enter the URL as
example.atlassian.net
.