"Hi, I'm the founder of Imzy. It's a hard day but I want to make myself available, especially to entrepreneurs who may have questions. This last 2 years has been fun, and hard and I've learned a lot. You can reply here or email me at dan@imzy.com"

Have you considered contacting Internet Archive - or specifically, "Archive Team" - and coordinating with them to package up and deliver an archive of the public data that was produced on your platform ?