Google Maps API on bridgetroll.org requires billing information

[siruguri]

It seems like bridgetroll.org is facing this issue:

https://developers.google.com/maps/documentation/javascript/error-messages?utm_source=maps_js&utm_medium=degraded&utm_campaign=billing#api-key-and-billing-errors

tl;dr: "Under certain circumstances, a darkened map, or 'negative' Street View image, watermarked with the text "for development purposes only", may be displayed. This behavior typically indicates issues with either an API key or billing. In order to use Google Maps Platform products, billing must be enabled on your account, and all requests must include a valid API key. "

That's also the JS error in the console:

You must enable Billing on the Google Cloud Project at https://console.cloud.google.com/project/_/billing/enable Learn more at https://developers.google.com/maps/gmp-get-started js:70:324
    kd https://maps.google.com/maps/api/js?key=AIzaSyAgKf99_jIqJFKdEEllWFZx5xerCzmdMdY&v=3.35&sensor=false&libraries=geometry:70
    Xp https://maps.google.com/maps-api-v3/api/js/40/3/common.js:75
    e https://maps.google.com/maps/api/js?key=AIzaSyAgKf99_jIqJFKdEEllWFZx5xerCzmdMdY&v=3.35&sensor=false&libraries=geometry:90
    notify https://maps.google.com/maps/api/js?key=AIzaSyAgKf99_jIqJFKdEEllWFZx5xerCzmdMdY&v=3.35&sensor=false&libraries=geometry:203
    e https://maps.google.com/maps/api/js?key=AIzaSyAgKf99_jIqJFKdEEllWFZx5xerCzmdMdY&v=3.35&sensor=false&libraries=geometry:90
    Ke https://maps.google.com/maps/api/js?key=AIzaSyAgKf99_jIqJFKdEEllWFZx5xerCzmdMdY&v=3.35&sensor=false&libraries=geometry:89