Who was the entity to contact regarding that?
I'll try to translate the relevant paragraphs:Application for a decision in accordance with the Law of 8 July 2005 on exercising the right to compensation for property left outside the current borders of the Republic of Polish, can apply:
1. The owners (or co-owners) of property abandoned beyond the present borders of the Poland who were on 1 September 1939 Polish citizens and have lived on former territory of the Republic of Poland
2. In the case of death of the property owner (co-owner) - the right to compensation shall be entitled to all his heirs, or some of them, as indicated by the other heirs, if they have Polish citizenship. Identification of a person entitled to compensation is followed by the submission of a statement with notarized signature to a public administration body or in the Polish consular office.
Is there any chance they may extend it or open it up for application again?
I'm not sure if it's possible yet - but you should contact with a lawyer.
Also is there any website or office to contact or to keep checking with regarding this? Basically some way to see what is going on with this issue.
Lost property (so-called mienie zabużańskie) and compensation are (were) in the hands of voivodeship offices, according to the place of residence of the applicant.
I don't know about any general website which deals with the case.