Comes up so often…
Important: Do not share this with ANYONE besides support (support[at]theblockheads.net and contact with @milla here on the forum). If someone asks for it in game they are trying to steal your account or get access to your owner portal.
Step 1. Go to the pause menu inside a world.
Step 2: Click
Help / Credits
Step 3: Scroll down to the
Support section, it’s roughly 75% of the way down the page, just before the credits section. My support ID has been covered in red.