I wondered if you could get in touch with the issuing bank to claim refund for me.

我的旅行支票遗失了，您能否替我和银行取得联系，要求重新签发。

youdao

At that stage you generally have to pay the taxes and file a claim for refund.

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Instead, use a federal form 843, Claim for Refund and Request for Abatement (downloads as pdf).

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All individuals who prepare all or substantially all of a tax return or claim for refund are required to obtain a PTIN.

FORBES: Who's preparing your tax return?