Probate Granted to sell real estate

[David Young]

Question ??  There is a home the has been granted the sell of real estate through probate court. The are two heirs in the property that has been served by the court that they are  not legally to stay there after the property have been sold.The house is under contract and the heirs are refusing to let me see the property during my due diligence period.How can I fix this situation. Will the heirs be classified as squatters or is this trespassing. The heirs inside the property are not the executor of the estate