Contact

Plumbline is run by one person. Email is the best way to reach me.

Payments and refunds: try /paysupport in the bot first; write if it cannot solve it. Include roughly when you paid.
Privacy requests: a copy, a correction or deletion. Deleting is instant with /deletemydata.
Security reports: see security.
Wrong result: send the link or address and what you expected. Please do not send seed phrases or private keys, ever.

I usually reply within a few days. Telegram's own support cannot help with anything about this bot.