API provider requires IP Whitelisting

Hi

I need to pull some data from an API. The API provider only accepts anonymous logon with an API key.

I can easily refresh the data in PBI desktop, but it fails when I want to use the cloud.

The reason, I guess, is due to the API provider requiring that All IP Adresses requesting data through the API, must be whitelisted in their backend. 

So... The $1000 question is; How do I whitelist the IP adress of the PBI Cluster URL? Or is there anyone who have expirienced something similar and knows of a workaround?

Here's a screenshot. As you can see, it's a simple web query where the API key is applied in the URL.. 

Any ideas?