A recent immigrant wants to receive mail at her 20852 address that she shares with a relative, but has been unable to do so. I tried sending her a letter but it wasn't delivered. How can this be resolved?

Post office

500 N Washington St, Rockville, MD 20850, USA

Grocery store

10401 Grosvenor Pl # 2, Rockville, MD 20852, USA

Farmers' market

Route 28 and, Monroe St, Rockville, MD 20850, USA

Lawn care service

401 Southlawn Ln, Rockville, MD 20850, USA

Water damage restoration service

850 E Gude Dr Suite H, Rockville, MD 20850, USA

Recycling center

801 E Gude Dr, Rockville, MD 20850, USA

Moving and storage service

640 Lofstrand Ln, Rockville, MD 20850, USA

Adult entertainment store

765 Rockville Pike suite i, Rockville, MD 20852, USA