Developer is a special user who has access to all the functionality required to configure the platform for the use by end-users (also called as clients or end-customers). This is usually someone who builds the hardware, develops the firmware, and does all the device configurations.
By default, first user in the Organization becomes a Developer.
Create and configure Device Templates in Blynk.Console
Create and configure web dashboard UI
Create and configure mobile dashboard UI
Add new devices to the account
Publish Templates to Blynk.Marketplace (work in progress)
Use other features accordingly to the chosen plan
In the Blynk app or in Blynk.Console
Navigate to My Profile / User profile in the left menu
Check that Developer Mode switch is set to ON