I let it make a detailed to do list of issues it has or questions it has and discuss it one by one. And fix and push to git. Works very reliably.

How are the credits used ? How much is the actual rate per minute of video generation ?

It seems to be good for people who aren't into hardcore usage, but just wants a device with basic functionality and great battery backup at an affordable price

There are certain places where it is valued a lot, and some corporates do not value them. It depends on the organisation.