I have a follow button for several artists embedded in some web pages. At seemingly random times, rather than the button, they display a red "Something went wrong, please try again later." Even when generating a follow button embed code at https://developer.spotify.com/documentation/widgets/generate/follow-button/, some artists will show the same error message in the preview there. It seems like it eventually just fixes itself, at least temporarily, and works fine again for the artists for a while, but it seems like I see the error more often than I see it work correctly (I've checked a few times daily, and I've mostly seen errors).
They aren't hugely popular artists and have relatively few followers, so I suspect they have low priority in some data list, perhaps. I'm not sure what can be done about this sort of thing, but I'd like for it to at least be mentioned and hopefully addressed if possible. Thanks.