@verius @maiyannah I tested using Google Chrome browser how authentication works on another GNU Social site, where I have an account. 1. Via browser I accessed this page: https://quitter.no/api/account/verify_credentials.json "Authentication Required" popup opened. After typing my username and password I do see long a JSON text with my User's data. It works! 2. When I access https://community.highlandarrow.com/api/account/verify_credentials.json , the same "Authentication Required" popup opens, but I cannot get through this prompt as if I really don't remember correct login/password.