Set CloudDB1.ProjectID:

I wanted to make a tool-apps with that i can manage my different cloud-databases…

Where are you running your cloudDB from ? (Which redis server provider?)

mit app inventor…

This is for testing only, not for production environments

my english is very poor, do i understand right that this is an environment for learning how to make an app and have to move elsewhere when using it?

As I said, it is OK to use the MIT cloudDB for testing purposes, but it should not be used for a production environment. If you are learning how to make an app, then using the MIT cloudDB is OK.