Why qTest Scenario - Enterprise BDD for Jira add on won't open to let me configure it

Stefan_ywejq5

I followed the instructions here: https://marketplace.atlassian.com/apps/1218008/qtest-scenario-enterprise-bdd-for-jira?tab=support&hosting=cloud

to install this app to my Jira Account. 

 

However, when I go to my project settings, apps, and try to select it to configure the initial set up, it just loads indefinitely before giving me an error message that says 

"

Something's gone wrong

Our team has been notified. If the problem persists, please contact Atlassian Support."

I've tried un-installing and re-installing the app but that made not difference. 

Any advice to getting this app to work with Jira Cloud?