Comptaible with Mailguns EU Region

Hello!
I installed the plugin on a new site, however, I don’t get it to work. I connected it with Mailgun, a domain in the “EU region”. I think this is also the issue.
At the bottom of the diagnostic test I found this:
Postman Active Transport: Mailgun API (https://api.mailgun.net:443)
However, I am sure it should point to https://api.eu.mailgun.net.
Can you confirm this? Will it be resolved or should I change it to US region. On one installation I have the domain there and it’s working like a charme.
Thank you!
Alex

HostName: 217-160-0-252.elastic-ssl.ui-r.com
OS: Linux info 3.0 #1337 SMP Tue Jan 01 00:00:00 CEST 2000 all GNU/Linux
PHP: Linux 7.2.8 C
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=No, allow_url_fopen=Yes, mcrypt=No, zlib_encode=Yes
WordPress: 4.9.8 de_DE UTF-8
WordPress Theme: Flatsome Child
WordPress Plugins: Akismet Anti-Spam, Broken Link Checker, Cloudflare, Contact Form 7, Cookie Notice, Easy HTTPS (SSL) Redirection, Jetpack by WordPress.com, Login No Captcha reCAPTCHA, MailChimp for WordPress, Nextend Social Login, Post SMTP, Redirection, Regenerate Thumbnails, Title and Nofollow For Links, UpdraftPlus – Backup/Restore, User Submitted Posts, WooCommerce Permalink Manager, WooCommerce Extended Coupon Features, WooCommerce PDF Invoices & Packing Slips, N-Media WooCommerce PPOM, WooCommerce Services, WooCommerce, WooSidebars, Yoast SEO, WP Crontrol, WP Fastest Cache, WP-Optimize, Smush
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email
WordPress wp_mail_from Filter(s): new_mail_from
WordPress wp_mail_from_name Filter(s): new_mail_from_name
WordPress phpmailer_init Action(s): wpcf7_phpmailer_init, WC_Email_New_Order->handle_multipart, WC_Email_Cancelled_Order->handle_multipart, WC_Email_Failed_Order->handle_multipart, WC_Email_Customer_On_Hold_Order->handle_multipart, WC_Email_Customer_Processing_Order->handle_multipart, WC_Email_Customer_Completed_Order->handle_multipart, WC_Email_Customer_Refunded_Order->handle_multipart, WC_Email_Customer_Invoice->handle_multipart, WC_Email_Customer_Note->handle_multipart, WC_Email_Customer_Reset_Password->handle_multipart, WC_Email_Customer_New_Account->handle_multipart
Postman: 1.9.4
Postman Sender Domain (Envelope|Message): club-winery.com | club-winery.com
Postman Prevent Message Sender Override (Email|Name): Yes | Yes
Postman Active Transport: Mailgun API (https://api.mailgun.net:443)
Postman Active Transport Status (Ready|Connected): Yes | Yes
Postman Deliveries (Success|Fail): 0 | 4
Postman Stealth Mode: Yes

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