Help with Heroku Database issues and website user database

Service Description

We designed a website from scratch using python and flask app. The code is available in github public hlalani2 pharmacy_project. The issue is we do not have a way of deleting test users and users who have forgotten their password from the database. We are hosting through heroku and we have had issues with pulling user info into the database so there are alot of users missing. We would like to reset these hidden users and have a way to reset specific email addresses as needed. We want someone to once and for all design the database to work perfectly and have an easy way to delete users and reset email addresses