The authorization of your device in TheTechPad should be a one-time process (unless you deauthorize it on purpose), but there are a few cases where it might happen that your device gets deauthorized. Please find below the most common scenarios and how to solve this problem.
You have another active WhatsApp Web session
Quite simply, at the moment WhatsApp allows you to be logged into one session at a time across WhatsApp Web, WhatsApp Desktop, and Portal. If you log into one of these while connected to TheTechPad, your device will disconnect automatically.