/home/forge/coinrevolution.com/public/pt/wp-admin/admin-ajax.php (No such file or directory)” while reading response header from upstream, client: 188.8.131.52, server: coinrevolution.com, request: “GET /pt/wp-admin/admin-ajax.php HTTP/1.1”, upstream: “fastcgi://unix:/var/run/php/php7.0-fpm.sock:”, host: “coinrevolution.com”
Hi, the missing file reported (admin-ajax.php) is not used by our plugin, hence that is another error not connected to newsletter. Probably that error is due to the prefix /pt/, maybe added by a multilanguage plugin.
You should try to find out an error related to the url https://coinrevolution.com/?na=s which is an action url by newsletter which called directly works perfectly, giving back “invalid” which is correct.
I suspect you have problem with the mailing system. Check from status panel if your blog is able to send emails.