Did not survive the winter. Others say the same thing. Is there a problem in this area?
The problem is only that hydrangeas aren't reliably hardy in your area. That means that some years it just gets too cold for them to survive. If you want to keep hydrangeas, you'll probably need to take special care of them for the winter: This article has some tips; https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-winter-care-how-to-protect-hydrangeas-from-winter-cold-and-wind.htm
Also, if you learn about the USDA hardiness zone in which you live, you can select plants that are hardy in your area. This article will tell you more: https://www.gardeningknowhow.com/planting-zones/usda-planting-zone-map.htm