Repair Cart in wordpress online store WooCommerce Bitrix24

https://moonk-design.com/


Not working now:

1) increase/ decrease in the number of goods in the basket (from 1 to 2 pcs, etc.)

2) When entering a coupon or trying to increase the goods, delete the goods - the cart is completely updated and all the data entered by the client flies off - and the block with the goods must be updated separately from the rest of the basket, the users data remain.

3.1) The amount of delivery does not change in the shopping cart

3.2) delivery for Moscow and Moscow region should be selected automatically depending on the class of goods, quantity and distance to Moscow (there is a code on the old site on OpenCart)

4) the amount of discounts is not displayed either on coupons or from the store

5) does not show which countertop is selected for right-handed /left-handed

6) Orders do not get into CRM


The cost of the task is indicated approximately.