Buying A House tax problem

[Cristian Veres]

Hello! I am trying to buy  a property that I found  2 months ago. I talked with the owners daughter who apparently is a real estate agent. I've been inside the house and I made an offer, they accepted my offer and I signed an Agency Disclosure Statement,Buyer Agency Agreement, Consumer Guide to Agency and Consumer Guide Receipt via Dotloop. I have not signed the Purchase Agreement because they have some kind of problems with taxes, from what she said: "There was an issue where their payments were not being properly applied to their account for several months and they just found out about it so they have been battling to have it resolved." It's been almost 2 months since they are "battling to have it resolved" and I don't know what to do. Can you guys please give me an advice on how to deal with this problem?