Telegram can't send messages to non contacts (Fix)
Learn how to fix can't send messages to non contacts on Telegram
The major reason why this happens is when someone block you on telegram or a group of people report you for spamming their inbox.
So, telegram will not have a choice than to just lock up your account from being able to message those who are not on your contact list.
With this tutorial, you will be able to know the necessary step you should take to solve this particular issue.
Enjoy!
