1031 tax exchange...,

[Carson Plant]

I have been working on selling a property and then reinvesting into another one. I’m supposed to close on both properties on same day but the one I’m selling just called and put off sale unit a week after I close on the property I’m buying. My question is can I still do the 1031 exchange? I tried putting off the property that I am buying but I can’t so will have to close on it now before I sell the property. I also my taxes lady said as long as it in the 45 days I can do it but I’m not sure about that.