The english, at least in the last one (enable all messages) seems a bit weird, but not being a native speaker i can't really suggest a better alternative. @ngraham do you have some time to review the text changes in here?

I am getting the same vibe not sure off hand how to improve it. One
instance is missing connector word. The wording is understandable but
awkward. I am not in position to offer official review in any case.

Sorry, I don't feel like I'm familiar enough with the app in question to be able to offer a lot of assistance here, especially for the first change. The second one seems fine to me. The third one seems really awkward. Do we even need a confirmation dialog to confirm this in the first place?

To summarize the current reviewers responses,

• "Improve Low Difficulty warning message to solve Bug 357999"
  • OK (or not familiar with game)

• "Improve Bug 242300: Warns users that generation of Unlimited mode puzzles takes long time"
  • OK

• "Explain better what "Enable all messages" means"
  • QUESTIONABLE. For me, in the current state, I cannot deduce what the action is supposed to do because the menu item text only says "Enable all messages" . The confirmation dialog can serve as a vehicle to explain what the action does.

For message 3 this is my suggestion, what do you think?

This will enable all the dialogs that you had disabled by marking the 'Do not show this message again' option.\n\nDo you want to enable them?

last question may be just "Do you want to continue?"

@aacid I used your suggestion to fix the message. It sounds more natural and fluent. From my side this is now ready to land.