I can answer most of this for ya, development takes time, he props make the characters then animate them for each scene. (depends on scene could take days)
then new feature and updating various functions take alot of time to just code.
The avg development for indie devs tend to be 1-8 month depending on if the the amount there patron makes them since they have to have cash to live, and update sizes.
So relax it takes time support the patron or the discord to get more info.