The bot has been deleted, banned for spam, or the name is case-sensitive. Solution: Verify the spelling. Telegram usernames are case-insensitive but character-sensitive. Ensure there are no spaces. Try ukussa_server_bot (underscore) if the hyphen fails, as hyphens are rare in Telegram handles.
When the ukussa server receives a contact, have it query an external API (like Twilio Lookup or a local SS7 gateway) to validate if the number is active and what carrier it uses. Telegram- Contact -ukussa-server-bot
If you run a server and installed a fork of the Ukussa framework, this bot acts as your NOC (Network Operations Center). The bot has been deleted, banned for spam,