Hello,
I may be using Prolific to field my study, and it looks like to use oTree HR, I need to upgrade my code to oTree 5. As my programming skills are quite advanced, was hoping to stick with the code I have, but I want to give upgrade a try if oTree HR will make things a lot easier. That said:

1. Is there any disadvantage to oTree 5 that I should be aware of?
2. Would upgrading the code to oTree 5 change the aesthetics of the study? If so, in what ways?
3. If I tried to transition to oTree 5 but was unable to do so, would I be able to downgrade to oTree 3?

Thanks!