Step 1 - Creating a bot in Telegram

In the Telegram client, find the BotFather bot and send it the "/start" command, after which the bot will send you all possible commands to communicate with it. To create a new bot, you need send the "/newbot" command, then follow the further instructions and provide a name/title. After creating the bot, you will be shown the string "Use this token to access the HTTP API": This is what you need to specify in the settings in the ACP > Community > Telegram > Settings API token of your Telegram bot.

Installing a webhook

In order for the bot to send notifications, you need to set up a webhook. To do this, compose a URL address and navigate to it in a browser:

WARNING: this url must be encoded (url encode online in google.com).

https://api.telegram.org/bot{BOT_API}/setWebhook?url=https://{SITE_URL}/?app=telegram&module=telegram&controller=telegram

After that, the following information should be displayed on the screen:

{"ok":true,"result":true,"description":"Webhook was set"}

Notification settings

Notification options are enabled in the app, but not activated for all users at once. Therefore, you can make each notification event not as a suggested option, but enabled by default for all users.

Each user will receive a notification in Telegram if two conditions are met:

Enabled option in notifications settings (/notifications/options/).
The user's nickname is specified in "Your nickname in Telegram" on the same page.

Setup completed!