Archive cards are not auto-deleted. They stay there until manually deleted or Sent back to the Board
You can use this free tool to bulk delete (Trello do not support bulk deletion out of the box): https://trellotools.azurewebsites.net/BatchArchive
ok, thanks for your answer
but I can't authorize the account because it says: App not found
please give me more detailed instructions
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@Krzysztof Milejski Sorry about that... The "App not found" issue is now resolved so please try again (Thank you for reporting this 🙌)
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