I am using the Newsletter plugin on a website with growing users, right now the list is not very big but I have hot news I want to send out via Newsletter.
This is my third newsletter and last time everything worked fine. Now this time I am able to click on create, I can write a newsletter, but when I click on save or next, my browser shows a page saying ERR_CONNECTION_CLOSED.
I cam verify it is not my internet connection because it also happend when I switch to mobile connection. It’s also not the browser, as I tried it in Opera, Edge and Chrome. I even booted my laptop but same result.
All my website and wordpress runs fine. I only get an error when I try to contine with a newsletter.
I also created a new newsletter (to make sure it’s not the content in the newsletter) and yet again same result.
I am afraid I have to switch to another tool if this error persists. I have no idea how to fix it. Any thoughts?