Issue
You have been instructed to log into help.heroku.com to create a Heroku support case. But you are unable to create a new account on Heroku.com and need to reach Heroku support for help.
Resolution
If you are having trouble creating a Heroku account, take a look at the Account Support FAQ for assistance in troubleshooting your new account creation. You may also engage Heroku support using this form https://www.heroku.com/account-lockout to create a support case.