I can't open it with the housekeeper Poly Property app.

You can delete it and download it again.

The housekeeper Poly APP is a property app created by Poly. Users can provide services according to different groups, and both property personnel and owners can find corresponding services here.

This application positioning is a platform to provide community life service management for Poly Property. Property personnel can receive and dispatch the owner's application form in time, follow up and complete the corresponding tasks, and complete other related property management work. The workflow is clearer and simpler, and the data information is more real-time and accurate.