this plugin created 3 links for each page and cause bad index on google

Greetings,

I bought this plugin (CURCY – WooCommerce Multi Currency) and here are the problems.

My website domain is (5iali.com), and I have 2 currencies (USA, SAR). All pages now have 3 links, one is the normal which is what I want, and 2 links followed with this string (?wmc-currency=USD, ?wmc-currency=SAR). I turned on (Switch Currency by JS) option so the strings go off but still, each page has 3 links.

Google indexed all pages with 3 different links and then marked 2 links with strings as (Alternate pages with appropriate canonical tags) which caused a bad ranking on Google.

Note that I have many WordPress websites and all of them work well and rank well except (5iali.com) where I use your plugin, not only this issue but there is another one that happens on the checkout page when a customer chooses another payment option rather than the original options that came with WordPress and I found your plugin interfere with this plugin (Fr Multi Bank Transfer Payment Gateways for WooCommerce) for additional bank payment options.

Please try to fix this with me as soon as possible, thank you.