It doesn’t make sense to keep a community on life-support.
If, after a year, there’s no activity unless you initiate and start the discussions, create events, and constantly prompt people to participate, it’s time too be honest and admit it’s not working.
It’s tempting to keep trying to generate ever-bigger, temporary, spikes on the community EGK chart. You might believe that if you can just get a big enough spike the community will magically come to life.
Alas, it’s not going to happen (and nor will a technology change fix the problem).
Your problem isn’t technological, it’s perceived value. Members don’t see the value of joining and participating in the community. You need to revamp the concept and try again.
That means tweaking the target audience, the purpose of the community and what happens within the community.
You haven’t failed, you just tested an idea that didn’t work. Now it’s time to move on to the next idea.
The real failure would be to stick with a failing idea.