Unable to access Salesforce Package configuration (refused to connect)
After the Salesforce package is installed successfully, clicking on the configuration link on the installed packages results in a "refused to connect" error.
Jira Cloud or Jira Server
All compatible Connector versions
Clickjack Protection is enabled in Salesforce.
Disable the clickjack protection in Salesforce Setup:
From Setup, enter "Session Settings" in the Quick Find box, then select Session Settings.
In the Clickjack Protection section, deselect Enable clickjack protection for customer Visualforce pages with headers disabled.
Save your settings.