Nope, it's not just you. Most Disney websites, including Disney Vacation Club, are currently unavailable due to technical problems.
Update 3:15pm: The DVC site appears to have recovered.
Most Disney theme park related websites including those for Walt Disney World, Disney Vacation Club and MyDisneyExperience are currently unavailable. This outage impacts a wide range of features including DVC resort reservations, dining reservations, FastPass+ and more.
DVC Member Services is impacted by the same outage. While staff members may be able to answer rudimentary questions, they are unable to make or change resort reservations using DVC points.
No estimate is currently available for the return of services. We will update this post as the situation evolves.