When creating my pong app, I came across an issue when trying to make my image sprites able to move. Currently, only one sprite will move at a time and I want them both to be able to move at all times so that it's a fair game.
what about providing a screenshot of your relevant blocks and elaborate a little bit?
this example by Scott could be helpful: https://groups.google.com/g/app-inventor-developers-library/c/_EcUDhFxZAI/m/Kj6Nz21p92UJ
Taifun
I can't download any sort of screen capture software because I'm on a school computer.
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.
Taifun
Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by 
Taifun.