Question about HTML payment link buttons in my codeigniter project.

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HTML

CodeIgniter

Hi there im trying to add functions to my codeigniter project so that people can checkout using perfectmoney and advcash by clicking buttons which link them to the api and redirect user to the appropriate payment service. I have followed the relevant api documentation for each and placed some buttons into the relevant view page where I want them but when I click the buttons they don't redirect to my desired link just /index.php/processing/asdasd? can anyone guide me on where im going wrong? here is a sample for perfectmoney:

<button link="https://perfectmoney.is/api/step1.asp" method="POST">
<input type="hidden" name="PAYEE_ACCOUNT" value="U3492039">
<input type="hidden" name="PAYEE_NAME" value="Cryptonage">
<input type="hidden" name="PAYMENT_UNITS" value="USD">
<input type="hidden" name="STATUS_URL" value="https://perfectmoney.is/api/step1.asp">
<input type="hidden" name="PAYMENT_URL" value="http://127.0.0.1/cryptonage.net/index.php/processing#wizard-h-3">
<input type="hidden" name="PAYMENT_URL_METHOD" value="GET">
<input type="hidden" name="NOPAYMENT_URL" value="http://127.0.0.1/cryptonage.net">
<input type="hidden" name="NOPAYMENT_URL_METHOD" value="GET">
<input type="hidden" name="SUGGESTED_MEMO" value="">
<input type="hidden" name="BAGGAGE_FIELDS" value="">
<input type="submit" name="PAYMENT_METHOD" value="Perfectmoney checkout">
</button> 

What I have tried:

following relevant payment api docs and placing html buttons in my codeigniter project.