bug with a new provider

With the first provider on the list all is OK – displayins, info client on the
With the first provider everything runs correctly – the display, the email to the customer with the invoice, the link to the tracking on the provider’s website.
But when I add a second provider, it’s a mess – provider’s name does’t appear on the email sent to the customer and the link to the providers website does not work (a code page is shown). Is it a solution for that? Otherwise – it is a very good and very useful plugin and it would have a big success if it were corrected and maintained.
My configuration:
WordPress 4.5
PHP 7.2.14
WooCommerce 4.0.1