Chasing users fleeing another platform is not a long-term valuable strategy.

Effort is better spent trying to figure out the compelling reason for people to join the network independently.

If you have that, then you can use sudden external entropy to help grow.

But sign ups for the sake of sign ups don’t matter.

Let's make onboarding fun. Many people find it complicated to get in by paying or not being able to upload their content in an optimal way like videos. 

As they say in Atomic Habits: 
Make it simple, make it obvious...