In order to withdraw your PBL tokens on Kucoin exchange, follow this step-by-step guide.
Log in to Kucoin - https://www.kucoin.com/#/login
Open the "Assets" section.
Open "Withdrawal" section.
Click on the tokens icon in the upper left corner and search for "PBL" or "Publica".
Once selected the Publica token, enter your wallet's address. Click Add Wallet Address button.
Answer a security question, as well as verify the withdrawal by entering the Google 2-Step verification code.
Click Confirm.