Sign into Jira Cloud
On initial load of the webpart the user signs into Jira Cloud instance.
Accept Jira Access
When the button to sign in is clicked a new window is opened.
Choose a site to authorize enables the accept button.
Await connection response
The window will you inform you once the connection is set up.
Close connection window
By closing the auth window the webpart will be reloaded and your connection is established.
Start editing webpart
Now you can continue by clicking the edit button to configure the webpart to display issues.