Problems with the Currency Switcher Plug-in

I am using WooCommerce Multi Currency – Currency Switcher at my site. To brief my situation, I have a default price is USD for each product, then I have also options to sum or subtract from the defaulted price in USD. So, when everything is in the default currency, that is USD, nothing is wrong. Other than this currency switcher plug-in, I am also using WooCommerce TM Extra Product Options to add options, and for your information, I am using WP Rocket for catch funtion, too.

However, the problem now I am facing is that when I changed into other currencies with this plug-in, the default price amount did not change when I add the item into the basket. Even though the currency sign and the amount changed when reviewing in the product page, but it is not working when I added the item into the basket. Besides, the default amount is shown as when it is in USD, but the currency sign has changed into another currency.

Secondly, the options I have selected was correct in both currency sign and amount in that foreign currency, as well as the final price, but not for the default price. Please find the screenshoot from the attached file.

So, I am wondering what is happening to the default price? Why is it not changing according to the foreign currency when I added into the basket?
Perhaps there are crushes between the plug-ins that I am using in my site or else? I would like to know how to solve this issue anbd looking forward to hearing from someone, thank you!