This documentation is for Taxamo v1. If your account is with Taxamo v2 use the documentation at integrate.taxamo.com/doc.
If you are uncertain of your version please contact support@taxamo.com for assistance.

I have integrated with WooCommerce and applied live API tokens, but tax is not being added. Any suggestions?

Please ensure that the Test “Public” token is in the WooCommerce “Public Token” field and, likewise, ensure that the Test “Private” token is in the “Private Token” field.

More information from the WooCommerce/WooThemes side can be found here.