Need help connecting QR Monkey API

I’m not too sure how APIs work and I’m trying to connect the qr monkey api but I’m getting this error. Has anyone here used QR money before?

Screenshot your API call and copy/paste it here, most likely not formatted correctly

Based solely on the screenshots, the Body JSON looks a bit wrong.

#1.

{
“key1” : “< valuekey1 >”,
“key2” : “< valuekey2 >”
}

Ensure the parameter is unique.

#2.

Enter the value of these keys. If they are optional, then check the checkbox 'Allow blank".

I just tried that and it still gave me the same error

this is what it shows on rapidapi.com

and this is what is written on qrmonkey’s website

I’m confused on where should I find or put “form field name file”

bump.