@dreamcreator I can see the form now but the email validation fails. I think it is caused by this, which needs to use https instead of http
http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js
The form is submitting to subscribe page 7 but with list id 11, not list id 10 as you mentioned.
url: 'https://list.istok.de/?p=asubscribe&id=7',
<input type="hidden" name="list[11]" value="signup" />
Thank you, that was the problem, false list because it should be 10.
I havent known that there is list number in this ajax code.
Now it works correctly, thanks again 
The joy lastet not long
I had to take back axtension for config.php as phplist stopped to work.
Nothing worked. Firsta as I deleted:
define(‘FORWARD_ALTERNATIVE_CONTENT’, 0);
define(‘ACCESS_CONTROL_ALLOW_ORIGINS’, [‘https://anything.istok.de’,‘https://rainbowsongs.org’,‘https://babyfat.istok.de’,‘https://backpain.istok.de’,‘https://beauty.istok.de’/]);
define(‘PUBLIC_PROTOCOL’,‘https’);
list.istok.de kann diese Anfrage momentan nicht verarbeiten.
HTTP ERROR 500
Without this code the form is working (confirmation will be sent)
But there is a popup failure after sending form:
Sorry, we were unable to process your subscription.
Example:
@dreamcreator You have made a typing error but you can use this line instead
define('ACCESS_CONTROL_ALLOW_ORIGIN', '*');
Oh thx, Now it works and don’t have to write each subdomain.
I also have another problem but will open better another thread
No new thread , I had issues to send test email to gmail emails and generally bounces or no delivering.
No I know from provider it was not actualized DKIM
No they corrected this:
Before was only 6/ and now 10/10