Thanks for being so open and transparent about your journey. It’s something that I value, especially as I do the same over at Task Pigeon.
I tried to review your website again to suggest some ideas but note that it has already been taken down? (i’m getting a 403 error message).
My gut reaction is that there has to be a home for Corilla somewhere. The route you take IMO would largely depend on if you and the team have the energy/desire to keep working on it. If not that would probably rule our acquihires / mergers, perhaps leaving a sale of the underlying tech or open sourcing as two options.
Hope it all works out in the end.