Check 1: is it actually connected
Open your project's Connection tab and confirm it shows as connected. A Telegram bot works differently from a Discord bot, there's no separate Start/Stop step, once a valid token is connected, your bot replies immediately based on whatever flows you've built, so a missing reply almost always traces back to the connection itself or the flow, not a bot being "offline."
Check 2: does a flow actually match what was sent
Check your Flows tab: a command trigger (e.g. /start) only matches that exact command, and only one flow can use it. If nothing matches, only a flow with an "Any message" trigger responds, and only if one exists and is Enabled.
Check 3: is the flow itself Enabled
A disabled flow's trigger is ignored entirely, even if everything else about it is correct. Toggle it on from the Flows list.
Still not working?
Reach out with your bot's username (not the token itself, never share that) and roughly what message you sent and expected back, that narrows down whether it's a connection or a flow-logic issue.