Opal patronage authentication issues

Hi all,
Wondering if anyone is able to assist with authenticating with Opal Patronage.

I am using the standard ‘Authorization’:'‘apiKey {key}’ header which works successfully for GTFS and RT feeds. I’ve also added the requested referrer header.

Unfortunately, I get a 400 response with this error:


InvalidArgument
Unsupported Authorization TypeAuthorization
apikey {key}

Any ideas please?