It's currently hardcoding nostr:nprofile1qythwumn8ghj7mn0wd68ytnsv9ex2ar09e6x7amwqyvhwumn8ghj7mn0wd68ycmgv43kktndv5hhyetvv9usqgzn9kpsmllqnsf7wh5tz3wgy4cclsftqqplv8tpayrhwgw8llunevk4p6dz blossom server. I'm not sure on their current npub limits for all users. This is a core feature to let you use any Blossom server and will be one of the things I fix first.