If a person has left the 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 group's invite link as long as they are not on the Removed Users list.
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Se unha persoa xa non forma parte dun grupo, necesitas estar dentro dos seus contactos de Telegram para engadila novamente.
Ten en conta que pode unirse usando o link de invitación do grupo se non está na lista de usuarios expulsados.
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Classy Beaver,
Jan 6, 2022 at 20:53