Regrettably I had to make the difficult decision shut down Fursvp. The 16-year-old (!!!) website is very outmoded and clunky, and everything it does, other free services can do better. The time and expense maintaining the website is greater than the value it has been providing to furry communities.
I recommend Meetup and Google Forms as great alternatives with a better user experience.
Thanks so much for taking advantage of Fursvp while it was around! It has been my pleasure providing it to the furry community!