It would be really really helpful to see here precisely:
which ones are critical - sounds like Registration Page and Ethiopian Calendar?
the source of each problem (e.g. is it specifically related to the React Form Engine, or is it related to the foundational O3 RefApp, or is it a feature that can be built using the shared O3 engineering approach?)
Feature Work
[ ] Registration page
[ ] UI
[ ] Forms
Bugs
Support