504 errors and long queries

hello,

a backend of my WooCommerce store is lately experiencing various 502 and 504 errors, making the whole backend unaccessible. My hosting engineers identified with new relic that your plugin is causing this. I am using the latest version. Below is the correspondence from rocket.net .
can you please urgently help me with this?

“The component “#WOOMULTI_CURRENCY_Data::getcookie” is related with these two plugins:
In this case, we recommend reaching their support on their official site (https://villatheme.com/supports/forum/plugins/woo-multi-currency/) or Code Canyon if you bough the plugin there (https://codecanyon.net/item/woocommerce-multi-currency/20948446/support).

They should be able to provide more information about why the plugin is doing long queries and causing those 504 sometimes.”