This is a frustrating spot, and it is one where a real estate attorney is worth the cost rather than a do-it-yourself fix. Banks often have their own power of attorney acceptance process, and a notarized POA alone is not always enough — some require their own form, additional review, or a legal department sign-off. An attorney can contact the servicer on your behalf, put the request in writing through the right channel, and advise whether the check can be reissued, deposited through an attorney trust account, or resolved another way. Keep a paper trail of every servicer conversation, including names, dates, and reference numbers, and send key requests by certified mail as well as by phone. If the servicer will not budge, an attorney can also advise on escalation options, including a formal complaint. Do not sign anything on the seller's behalf beyond what your POA and your attorney clearly allow.
I agree. I am also considering reaching out to the title company that handled the sub-to transaction and refi to see if they can assist and I will also consider exploring a real estate attorney as well.