I have downloaded the app to my mobile phone but it does not work as it does when I test it with the MIT app. It is a problem of one of the screens that does the animation of start but repeats it every time and do not let you do anything. Any solution?
let me guess: probably you forgot to stop a clock before switching to another screen?
It would really help if you provided a screenshot of your relevant blocks, so we can see what you are trying to do, and where the problem may be.
To get an image of your blocks, right click in the Blocks Editor and select "Download Blocks as Image". You might want to use an image editor to crop etc. if required. Then post it here in the community.