I have JIRA version 7.0.10
It is a fresh server with no third party add-ons.
I tried to install JETI, but after downloading it, it doesn't fetch the Free Trial licence.
Upon giving valid Username and Password, it just processes the for 1-2 seconds and the dialog disappears.
Although the add-on is appearing in the Manage add-on page.
But the free trial option is not kicking in.
P.S. Upon pressing the configure page, it redirects to a dead link with 404 error.