If KRNL-Injector failed to find the Roblox process, delete KRNL App data and see. If that doesn't help follow the solutions mentioned in this post to resolve the issue.

It is one of the Roblox executors with easy-to-use UI and powerful execution capabilities. It’s worth noting that, similar to Krnl and Arceus X, you need to set up the key system to make use of ...