Here's the link to the official Factory Town discord:

https://discord.gg/factorytown

I'm on there almost all the time, so it's a great place to ask questions, report bugs, give feedback, and participate in polls that help me determine how to build certain features.

There's also a #beta-branch channel where I post all the patch notes for the beta branch, where players can get an early look at future versions and help me fix up any new bugs.