If you do not see the tax treaty option in your account, this may be due to the system considering several factors, including your visa type, US income type, employer type, and country of residence. Please carefully review all the information you provided and ensure it is complete and accurate. Even a small error or missing detail can affect whether the tax treaty option appears. If, after double-checking everything, the information is correct and the option still does not appear, it is possible that you are not eligible to claim a tax treaty for your situation.