Trying to do automatic billing on qiwi.
Before the form in the html did:
$publicKey = '...';
$amount = (int)$info['price'];
$link = 'https://oplata.qiwi.com/create?publicKey='.$publicKey.'&amount='.$amount.";
<form class="form" action="<?php echo $link; ?>" method="POST">
<input class="email" type="email" name="email" placeholder="Email address">
<input class="button-inp" type="submit" name="submit" value="Next">
Email address in the form, I have not taken into account.
After sending the data, open the link type https://oplata.qiwi.com/create?publicKey=...&amount=599
and the inscription error 405.BUT
if I click on the link in the address bar, it does stand out and I press enter, it opens a normal form, which should be.
I don't understand why she just doesn't open?
Please tell me how to fix it.
P. S. If I make the form method GET and input field hidden, then everything will work fine.