I installed and re-installed the addon on one of our apps and when I click the Resource it will open a blank New Relic account and prompt me to add an app. The Heroku app name is clarion-dev. This works fine for other apps we have.
Furthermore, we’re paying for this addon, why do I have to post a in a forum?!
@adrian38 Welcome to the community 
I have reached out to our account team to help you with your Heroku app. You should get an email from them soon.
In regard to your question about this forum whether you are sent here to get support depends on your New Relic One pricing model. This doc lays out the different support offerings: https://docs.newrelic.com/docs/licenses/license-information/general-usage-licenses/global-technical-support-offerings