verify_iban() used by other Plugins

If I try to activate another Plugin, I receive the following Error. I can only use the Plugin which was activated first. I also informed the other Plugin Author https://codecanyon.net/item/gravity-forms-iban-validation/20859733.

Fatal error: Cannot redeclare verify_iban() (previously declared in /wp-content/plugins/woocommerce-germanized/vendor/globalcitizen/php-iban/php-iban.php:12) in /wp-content/plugins/gravityforms-iban 4/vendor/php-iban.php on line 12