Auto refresh URL with token authentication

I'm having troubles to set up auto refresh when I use http request using url with token authentication. It works in power bi desktop, but I cannot set up auto refresh in power bi service. It doesn't accept Anonymous Authentication method.

Data are extracted as follows:

= Web.Contents("https://app.idoklad.cz/developer/api/IssuedInvoices?PageSize=1000000&Page=1",[Headers=[#"SecureToken&quot; = "<mytoken>",#"X-App" = "iSmart",#"X-App-Version" = "1.0"]])

Url shows only https://app.idoklad.cz/developer/api/IssuedInvoices?PageSize=1000000&Page=1, without authentication part, so it is obvious that it doesn't accept Anonymous authentication. But how I can provide token using power bi service?

Thanks for help,

Lubos