There could be a few reasons why this happened:
1- You haven't linked your Telegram account with Xypher.IO. Click here to learn how to link your account
2- You haven't opened the bot. You need to open the delivery bot first before we are able to send any alert. Alerts are sent on XypherianBot by default
3- You have blocked the bot. Unblock it, don't be mean!
4- The webhook URL is incorrect, double check your URL and the one set in TradingView