Does a divorce count as valid if it was canceled by the couple with their signatures and the testimony of two witnesses, then the old divorce paper reappeared with a new stamp from the court?

The divorce sent by the lawyer is valid, and it is a right of the husband in which he can appoint an agent. If it was the first or second divorce, it is a revocable divorce, and the husband has the right to take back his wife during her waiting period (iddah (definition)) without the need for a new dowry or a new contract. And the reconciliation between you has already occurred, and witnessing it or writing it down is not a condition. The reconciliation occurs by the husband saying "I take you back" or anything that indicates that, or by having intercourse with her, or kissing her, or touching her with desire with the intention of reconciliation. It is recommended to have witnesses for the reconciliation, but it is not obligatory. As for the court's new signature on the old divorce, it is not a divorce, for divorce requires an explicit utterance or an implicit expression with the intention of divorce.