Hi, that link is correct and it is a tracking link, but your blog is not “passing” it to the Newsletter plugin, maybe a security plugin or a server configuration is blocking it.
I can suggest to change the link format adding to you wp-config.php the line
define(“NEWSLETTER_TRACKING_TYPE”, “ajax”);
just after the define about the database.
Keep a copy of your wp-config.php before any modification AND be sure to retype the double quotes if you coppy the text above, since they’ll be copied in the wrong format.
Then, if you send a test newsletter you’ll se the new link format, something like
https://soylagunanoticias.com/wp-admin/admin-ajax.php?…
That kind of link should not be blocked.
Let me know!