Polylang PRO compatibility – URGENT

Error trying to add two domains for two languages – they are both pointing to root

Fatal error: Uncaught Error: Call to undefined function pll_current_language()
in /data/a/c/ac2c7e41-7ed0-4926-a35e-ee9a45cfe267/mojasofia.sk/web/wp-content/plugins/woocommerce-multi-currency/frontend/location.php on line 153

Call stack:

WOOMULTI_CURRENCY_Frontend_Location::init()
wp-includes/class-wp-hook.php:307
WP_Hook::apply_filters()
wp-includes/class-wp-hook.php:331
WP_Hook::do_action()
wp-includes/plugin.php:476
do_action()
wp-settings.php:598
require_once()
wp-config.php:83
require_once()
wp-load.php:50
require_once()
wp-blog-header.php:13
require()
index.php:17

The page I need help with: https://mojasofia.sk/?deactivate-polylang=1