If a person has left athe group 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
唔好意思，如果有人喺谷走咗，雙方一定要係互為聯絡人（雙方都有對方嘅手機號碼）先可以把將佢帶返嚟。
48/194
Tony Wong,
Apr 26, 2020 at 16:05