Avatax taxes are not applied to the order

1.Visit > Phone Orders > Settings > Common and turn on “Switch Customer”

2. Adjust Avatax settings,  set option “Cart Calculation” =  “Force full tax rate calculation”

3. AvaTax plugin doesn’t work in admin context. So you should edit files in this plugin a bit.

Comment lines 97-99 in the file includes/class-wc-avatax-tax-handler.php