When you try to log in with a faulty code numerous times in a short period of time, the Too many attempts error appears. In this situation, you'll need to wait 24 hours before attempting to log in again.

Furthermore, if you want to know how much time is left until you can log in, go to web.telegram.org and try to sign in, then click on 'display technical data,' which will show you a timer with the exact length of time you have to wait before you can log in.

Read More: What time must I stay waiting for a telegram to stop writing “too many attempts, try again later”?