The fact is that I have a problem with my account on any device: phone, computer or web version. But nowhere but the web version shows me why the error happens. Therefore, I will indicate here the data for the web version.
It started spontaneously. I was chatting on the desktop version and all of a sudden I couldn't send messages anymore, they remained in "hours" status for hours on end. Telegram did not inform me about any error. Only then did I try to find the error using the console in the browser. The bottom line is that I can only send 3 messages in a short time, and then the 420 FLOOD_WAIT error turns on (but version K, not Z shows this error) and my messages are blocked for a while. Version Z shows this sign, as if the slow mod is on, but it's not. I have this problem in all public chats, this does not apply to private chats. Although a couple of days ago I could not write even in private messages.
Steps to reproduce
Go to any public group.
Send any 3 text messages within 10 seconds, for example.
Try to send the fourth message and see the Slowmode sign or the clock status.
Device info
Windows 10, HP Laptop 15-db0xxx, web-ver z 1.40.1 (screen 2 - k ver. 1.4.1)