In order to sync Multi-Channel Integration platform with your WooCommerce, you will need to change rates in WooCommerce. To do so, click on WooCommerce>Settings>Tax. The following tab should then appear:

IMPORTANT NOTICE!

If the Tax tab does not appear, go to WooCommerce > Settings > General and select the Enable tax rates and calculations checkbox. 

Once changes to rates have been saved, you can create different rates. Standard, Reduced & Super Reduced.

You can create one, two or three different rates. When creating these rates, you only need to fill in the Country code, Rate and Tax name fields.

To create these rates, click on all of the rates in the Tax menu.

In the Multi-Channel Integration Platform, you will have to link each of the Standard, Reduced and Super Reduced rates to one of the rates created in your WooCommerce store. This could be the same rate, if you only have one, or different rates.

Here in this article you have more information about Setting up Taxes in WooCommerce