Hi all,
I just created an account, added some clients and a Paypal gateway.
I sent my first invoice but when the client tried clicking on “Paypal” to pay, they get the following error:
"There was an error processing your payment [0]. Please try again later.Message:
- Security header is not valid."
I checked the gateway logs and this is what I see:
"server_response: “Security header is not valid”
data:Object
invoices: Array<Object[1]
credits: 0
amaunt_with_fee: 1000
amount: 1000"
What could possibly be causing this? Do I need something else in addition to Paypal?