Let start with - Woocommerce:
Open woocommerce settings,
Tab - Gerneral
Number of decimals - 0.
Tab - Account & Privacy:
I would recommend you to have a look at checkout and account creation settings to make sure all are as per your requirements.
Tab - Advanced:
Here are important checkout and account endpoints, make sure all the endpoints are correctly added, and if there are no any of the endpoint setup make sure to do that, else it will through an error 404 in the checkout and my account area. Here you can explore more about this:
To set the MC Woocommerce Wishlist plugin go to Dashboard > Hover over MC Wishlist > Click on "Global" > Scroll down to the section named 'Data Transfer Settings' > Click on "Select File" and select the file named "wishlist-wlfmc_options.json" to import settings > Click "Save Settings".
Go to Dashboard > Hover Over SCF or ACF > Click on Tools > In Import Section Click on "Select File" > choose the file named "wishlist-wlfmc_options.json" > Click on "import JSON".
Plugins are done. Now continue with next step...