Customers can see test option

Hello, we were using your WooCommerce Order Test plugin and this past month, the Test Order option had been visible to customers and some were taking advantage of that to make orders. I thought that only admins were able to see that option? We are using Version 2.1 8.1 Woocommerce 6.3.1 WordPress

I’ve had to deactivate the plugin, but I’m trying to figure out if it’s the plugins fault or some other backdoor way.