Im trying to debug an issue with variables not being passed to my IPN handler, im sure this used to work fine. I get all the other information through but not these values. Below is a test form ive setup just to force specific info in, but its still not working. Any ideas? (Ive removed certain details regarding email account - but these would not be ****** in the actual form. The form is generated via PHP - hence the $html .= stuff, but you should see the settings etc.)
$html .= '<form action="https://www.paypal.com/cgi-bin/webscr" method="post" id="tr_book">';
$html .= '<input type="hidden" name="cmd" value="_cart">';
$html .= '<input type="hidden" name="upload" value="1">';
$html .= '<input type="hidden" name="business" value="******">';
$html .= '<input type="hidden" name="currency_code" value="GBP">';
$html .= '<input type="hidden" name="no_shipping" value="2">';
$html .= '<input type="hidden" name="button_subtype" value="services">';
$html .= '<input type="hidden" name="no_note" value="0">';
$html .= '<input type="hidden" name="shipping" value="0.00">';
$html .= '<input type="hidden" name="item_name_1" value="******">';
$html .= '<input type="hidden" name="item_number_1" value="******">';
$html .= '<input type="hidden" name="amount_1" value="00.01">';
$html .= '<input type="hidden" name="shopping_url" value="******">';
$html .= '<input type="hidden" name="return" value="******">';
$html .= '<input type="hidden" name="cancel_return" value="******">';
$html .= '<input type="hidden" name="on0" value="GDPR">';
$html .= '<input type="hidden" name="on1" value="Email">';
