There are no reported issues with this plugin related to WooCommerce 3.7.1 release. I use WooCommerce 3.7.1 with this any many other plugins and 3 languages.
If you find any issue please report on:
https://github.com/hyyan/woo-poly-integration/issues
and reference issue #453 which discusses WooCommerce 3.7
Please note, from the home page of this plugin
“Please do not ask for support on wordpress forum anymore .. please if you want help just open a new Github issue.”
And the top Pinned post on this forum:
“No Support on WordPress forum”
