Rpi weather station change of API location

[gdaysoul]

Hi,
I am a VERY newbie Rpi user but recently followed the instructions to get the weather station working and it is GREAT, but I got this email from Tomorrow.io and I haven't been able to solve it.

"We're reaching out with an important update regarding your API services with Tomorrow.io. As part of our ongoing efforts to improve service quality, integrity, and security, we are migrating our API domain.

Upon reviewing our records, we noticed that your account is currently utilizing the old API domain. To avoid any interruption in service, we kindly ask you to update your API endpoint from data.climacell.co to api.tomorrow.io by May 11."

Core very kindly helped me with a suggestion but I can't seem to find the settings.json file to make the change.

HELP! Please