I've just installed Sendy for the first time (latest, 6.0.9) and have Sendy configured so that it can send emails correctly. I'm now trying to create a page on my website that includes the Subscription Form that I got by following the FAQ instructions.
When I use the subscription form, the name and email I entered are added to the subscriber list in Sendy, however I do not receive a confirmation email (I have double opt-in set), and if I leave the page open for a while I get a 524 error for the /sendy/subscribe page (which is where the POST request is sent, if I understand correctly).
If I try again with the same email address, I'm almost immediately sent to the /sendy/subscribe page and the "a confirmation email had already been sent to you" message is displayed.
Please advise on what to check so I can fix this.