If a person has left a channel in the past, you need to be in their Telegram contacts to add them back.
They can still join via an invite link as long as they are not on the Removed Users list.
194
抱歉，如果某人退出了频道，您必须是他的 Telegram 联系人才能将其加回。
39/194
冬雪织梦,
May 7, 2020 at 16:06