Why doesn't the bot receive updates from groups?

Question

API

After some (1-3 hours) time after adding the bot to the group, updates from Telegrams from this group stop coming to it.
All the necessary settings in BotFather are included. I also gave the admin panel to the bot.
In a personal chat with a bot, updates come normally.

Answer 1

Without code, and logs, you can only guess.
- bot settings
- crash with timeout if messages are checked in the database