Miguel Carneiro

double confirmed, if I comment out the md5 you are producing then I can transact normally.
it is an optional variable, hence the test working
..

oops , I see someone is on.. I’ll stop editing..

I just reverted my edits for you

error confirmed at line 289

$pfOutput .= $key .'='. urlencode( trim( $val ) ) .'&';

“&not” is being replaced with “¬”

separating the functions didn’t help and gave same results…

I then remembered that in some browsers the html parser needs proper validation.

Please change lines 284 – 295 with my updated code

OLD:

   $pfOutput ='';
    foreach( $data as $key => $val )
    {
        if(!empty($val))
        {
            $pfOutput .= $key .'='. urlencode( trim( $val ) ) .'&';
        }
    }
    // Remove last ampersand
    $getString = substr( $pfOutput, 0, -1 );

With this new code:

   $pfOutput ='';
    foreach( $data as $key => $val )
    {
        if(!empty($val))
        {
            $pfOutput .= $key .'='. urlencode( trim( $val ) ) .'&amp';
        }
    }
    
    // Remove last ampersand
    $getString = substr( $pfOutput, 0, -4 );

Now I’ll work on this Merchant_key issue …

if I use the standard settings for testing “sbtm02@payfast.co.za ” in sandbox its perfect.
Not in live, it gives merchant_key invalid.

When I switch to any one of my accounts then the MerchantKey error happens in test and signature error in live

There is no such page as your screenshot shows ..
Is there not a custom link or a setting to reflect this drop down ?
please see the circled areas ..

In the Supreme theme pages (left pic) its there , the right (divi) its not..
both have the same menu, nothing is actually duplicated so surely it should carry across OR supreme has a function call I need to put somewhere in divi..