"{ message: 'You cannot consume this service' }"

I have VIP membership and do api calls e.g.

let response = await fetch(`https://api.opensubtitles.com/api/v1/subtitles${foreign_parts_string}&languages=en${movie_hash_string}&tmdb_id=${tmdb_id}`, { method: "GET", headers })

This has worked for years, but now I get the response:

{ message: 'You cannot consume this service' }

Please can someone help me understand why this is?

“Contact Us” page is not working on the site. Please provide an email address I can use to contact someone?