It looks like there are some misunderstandings…
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a developer, in this case atomdeveloper, can decide to not provide services anymore, but this does not have anything to do with Kodular
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if you experience poor performance then what about doing a search in the community to find help? For example Kodular slows down, Kodular slow
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are you aware about Do it? use Do it to debug your blocks, see also tip 4 here App Inventor: How to Learn | Pura Vida Apps
see also Live Development, Testing and Debugging -
outdated extensions are the responsibility of the corresponding extension developer… generally you get what you pay for…
Taifun