New Relic Query Language (NRQL), similar to SQL, is a query language for making calls against the Insights event database. You can refer to the documentation in the link below to use data insights API to retrieve the data you need using NRQL.
I also tried this connector. I entered the id, the NRQL and the API key. The request seems sent but doesn't respond, I canceled after about 15 minutes of waiting.
I don't know what's happening, maybe I made a mistake in the information entered in the form.
What exactly are "AccoundID" and "Password or Token" fields ?
Account ID is 6-7 digit numeric field which you can find at address bar after login into new relic
Password or Token is application Token number which is alphanumeric
Mobile ->select any app-> settings->application (on the right above corner you may find)
with NRQL i am also struggling