You have a few options on how to modify that text :
1/ You may copy next file xstore/woocommerce/product-added-to-cart.php to your child-theme/woocommerce/product-added-to-cart.php and change this line of code due to your needs -> https://prnt.sc/g8jWQZwT5Chj
2/ According to the fact we are using the default wc_print_notice function and it has its own filter -> https://prnt.sc/O8hkQwF9fC9X you may modify your text just like you did but with the filter named -> ‘woocommerce_add_message’
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.