Go to Poloniex

Log in or create a new account on https://poloniex.com/.

Follow to API 

Hover the settings icon on the top right corner, click "API Keys."

Enable API

If you see the message about disabled API access, click "Enable API" then confirm with 2FA and email.

Click  "Create New Key"

 Confirm with 2FA and email

Add Poloniex to 3Commas

Don't change the key settings.
Check how to connect API to 3Commas.

Did this answer your question?