The answer to 'why is my roof vent wind damage' is that your roof vent is likely damaged due to high winds or severe weather. Roof vents are vulnerable to wind damage because they extend above the roofline and can be impacted by strong gusts. Common symptoms include the vent being dislodged, cracked, or missing altogether.
The best solution is to have a professional roofing contractor inspect the vent and make any necessary repairs. They can secure the vent, replace damaged components, and ensure it is properly sealed to prevent further wind damage. In some cases, the entire vent may need to be replaced if the damage is extensive.