I have the same problem, changing region and language at link above didn't help. News and interests are still in Chinese. I don't use a VPN, I haven't switched to Chinese anytime in the past (I don't read Chinese nor I am interested in Chinese news). So no idea why it happens. Cannot fix it and it makes News and Interests unusable to me.
i am having the same problem , so if anyone knows what to do please let me know