I've installed and configured the plugin to work with my PHPList newsletter. I want to use the checkbox in my register form but I get the following error when I try to register with the plugin enabled:
Catchable fatal error: Object of class Newsletter_SignUp could not be converted to string in /usr/home/ociofree.com/web/wp-content/plugins/newsletter-sign-up/php/frontend.php on line 96
In the line 96 I've found:
$variables['list['.$$this->options['phplist_list_id'].']'] = 'signup';, I've removed one of the two
$ and now the error is not appearing. Anyway, my form is still not working, the users are not being added to the PHPList list and I don't know why.
Any ideas of how can I test it to see where is the problem? Thank you in advance!