Direct Variation Link not working for other languages

Hi, The plugin perfectly works for the english language. My site runs on four languages. Now currently two are in production.

For English pages the variation links are working correctly.

But for the other languages such as chinese and japanese. The plugin is not selecting any of the variation listed in the options of the individual products attributes section.

Please anyone help me for solving the issue.

https://www.ads-software.com/plugins/woocommerce-direct-variation-link/