Hello @chrisssy
Sorry to know that you faced issues with the plugin.
The plugin doesn’t place any restrictions on the number of users or posts that can be deleted. But if your server doesn’t have enough resources to handle the load, then it will result in timeout. I guess that’s mostly what has happened in your case.
We also have a feature where you can delete the users in batches. Did you try that?
Let me know if you need any assistance in deleting users by batches.