Proper testing is the key to a successful project launch.
In Telegram, bots are restarted via /start. They execute Start screen, but your communication with the bot is not deleted. We can say that this command works the same way as Template event.
But there are no such commands for other platforms. Therefore, at the beginning of bot creating we recommend to make Template event in the settings so that you can get to the beginning from anywhere. If you clear the correspondence with the bot, for the bot you will remain in the same place where you finished communicating with it.
To clear the correspondence completely, go to User states. Select your page from the list, and then click "Clear state". When you write to the bot, it will perceive you as a new user.