Completed:

• Hosted MQTT service
• Firmware with AP setup Web Server (Router login and MQTT service login)
• WordPress plugin (in the WordPress store) - working with PHP 8 now
• Python library (published to PyPi), easy to use in Flask/Django
• Website with sign-up, learning page, email onboarding, sign-in and upgrade.
• Basic version with Arduino source code (on GitHub)

ToDo: 

• Website re-set password option
• Upgrade immediately (with payment)
• Firmware re-set passwords (Station mode web interface)
• Change brightness (Station mode web interface)
• API with connection details (statistics, maybe add to web interface?)
• Sell on Tindie