You must have missed this part:
Senior leaders of the Taliban control the central bank, which has no systems in place to prevent terrorism financing or money laundering, according to the inspector general’s report, which cites an analysis paid for by USAID. Officials at the development agency declined to release the study, describing it as a “confidential internal document.”
When money leaves the central bank, there’s yet another concern. Humanitarian organizations are sometimes forced to pay cash directly to the Taliban. Local Taliban leaders have demanded that the U.N. and aid groups hire its members and their relatives or prioritize treatment of widows and wounded militants, according to the inspector general.