monitor arm keeps tilting down

iJoy Wireless Wavy Keyboard

Circle Key Keyboard - heyday™

Mount-It! Mobile Standing Desk with Dual Monitor Mount | 40 Inch Wide Height Adjustable Rolling Computer Workstation with Four Wheels | Grey

Ergotron LX Wall Mount LCD Monitor Arm

Bluetooth Keyboard - heyday™

Ergotron Wall Mount Arm Kit

LG Electronics 24" IPS Full HD 100Hz Borderless Design Monitor

Novelty Mouse Pad - heyday™

Ergotron 45-478-026 HX Wall Monitor Arm for 42" Monitors (Polished Aluminum)

Vivitar Aluminum Laptop Stand - Light Pink

Mount-It! Full Motion Adjustable Height Vehicle Laptop Mount for Cars, Trucks & Vans | No-Drill Installation and Tray for Laptops Up to 17"

Targus Replacement Install Kit for Targus Magnetic Privacy Screens

Mount-It! TV Wall Mount Bracket, Quick Release, Full Motion Swing Out Tilt Swivel, Articulating Arm Fits 13" to 42" Flat Screens and Monitors, Black

LG Electronics 27" IPS Full HD 100Hz Borderless Design Monitor: HDMI, Adjustable Tilt

Vivitar Acrylic Laptop Stand - Light Purple

iJoy Wireless Wavy Computer Mouse

Dual Monitor Stand for 17-32 inch Computer Screens, Dual Monitor Arms for 2 Monitors Holds up to 19.8 lbs, VESA 75x75/100x100mm, Black

Targus 4Vu™ Privacy Screen for 13.3” Widescreen (16:10) Laptops

Mount-It! Tilting TV Wall Mount Bracket for Small TV and Computer Monitors, Low-Profile Design with Quick Release Function, Fits Up to 27 Inch Screens

Targus 17" Dual Fan Chill Mat - Black

Targus 4Vu™ Privacy Screen for 15.6” Widescreen Laptops (16:9) with Flip Attachment

Gems Fluffy Rug Wrist Rest - Checkered Cherries: Polyester Computer Accessory

North Monitor Riser Stand with USB Ports: Desk Accessories MDF Hardware

Garmin HRM-Fit Heart Rate Monitor for Women