A seller adds their 1CS Telegram bot to a reseller or VIP-customer group, and it answers nothing until someone replies to it directly or types its username. That isn’t a 1CS bug — it’s Telegram’s own Privacy Mode, which hides ordinary group text from every bot by default. Fixing it is a Telegram setting first, then two checks inside 1CS.
Why the bot goes quiet inside a group
Telegram’s own developer documentation says plainly: “By default, all bots added to groups run in Privacy Mode and only see relevant messages and commands.” In that mode, a bot only receives commands addressed to it, replies to its own messages, and messages that mention it — not the ordinary back-and-forth customers type between each other (Telegram Bot Features). A 1:1 chat with the same bot never has this problem; private chats and channel posts always reach the bot in full. Only groups filter by default, which is exactly where a reseller group, a VIP-customer group or a flash-sale group lives.
Fixing it takes the right order of steps
Telegram lets you turn Privacy Mode off so the bot sees every message like an ordinary member — but the same page is explicit about the order: the change is made with /setprivacy in a chat with @BotFather, and “the bot will need to be re-added to the group for this change to take effect” (Telegram Bot Features). Toggling the setting while the bot is still sitting in the group does nothing until you remove it and add it back. Telegram also adds its own caution here, recommending this only “in cases where it is absolutely necessary for your bot to work” — worth treating as a real constraint, not a default to flip on every group. For a group where customers mostly tag the bot or reply to its prompts anyway, leaving Privacy Mode on and training the group to @mention the bot is the lower-risk option; a recommended starting point, not a rule.
Set up in 1CS
Once the bot can actually see the group’s messages, two settings in 1CS decide what happens next. First, go to AI > AI เจ้าหน้าที่ (AI Agent) > ภาพรวม (Overview) tab, find ช่องทางที่ใช้งาน (Active channels), and switch the Telegram inbox on — this is also where the AI reads whether it’s assigned to that inbox or not, so confirm it before customers start messaging the group. Second, open the same AI Agent page’s อื่นๆ (Others) tab and set up ปุ่มกดคำถามต่อ (Follow-up buttons) — up to four buttons shown after every AI reply, each either a fixed message, turned off, or left for the AI to generate a follow-up question on its own. 1CS supports these buttons on LINE, Messenger and Telegram, which matters specifically in a group: a tappable button creates a direct reply to the bot’s own message, so the next question from that customer lands as a reply — exactly the kind of message Privacy Mode always lets through, even if you leave it on. The full click-by-click guide is in Thai: ใช้ Product Card และปุ่มตอบกลับ and เลือกช่องทางที่ AI ตอบ; both sit inside 1CS’s AI Agents. For the general question of which questions an AI should resolve versus escalate before any of this, see How to design an AI agent that knows when to hand off.
A pinned message to copy for the group
Pin this at the top of the group so customers know how to be seen, whichever setting you choose:
📌 Questions here go to [shop name]‘s AI assistant — read this first.
- Tag
@[bot_username]or reply directly to one of its messages — that’s always answered.- Tap the buttons under the AI’s replies instead of retyping your question; they go through too.
- A plain message typed on its own may not reach the bot in this group — tag it or reply to be sure.
- For anything urgent, message [shop name] directly in a private chat instead of this group.
A group that stays this noisy during a sale is the same triage problem live-selling sellers already have on Facebook — see Turn Facebook live comments into orders, not noise for the comment-flood version of the same fix.
