For security purposes you can disable the currencies tab after you have wallets setup to prevent them from being edited in the WordPress admin.
Add the following line of code to your wp-config.php file in WordPress
define( 'MYCRYPTOCHECKOUT_DISABLE_WALLET_EDITOR', true );
Note* The file called wp-config.php is the main configuration file for a WordPress website. It’s located on the server in the root folder of your WordPress installation. As it contains important configuration settings, it is recommended to make a backup of website before editing the file.