Change warning message when deleting a chat?

When deleting a chat, a warning pops up that says “it will no longer be shown in the chat list. Its messages will remain on the server”

See screenshot:

This sounds misleading and looks scary for some users as discovered with a group of testers. They think that even if Autodelete settings are set to “Delete at once after download”, messages from a deleted chat will still stay on the server.

It might be interesting to change the message. I see two options:

A) Simply add “depending on your server deletion settings” or something like that

B) The app should look at the server deletion settings and show a string depending on that

Any ideas on how to go about that?

A suggestion: changing the message to “Messages may be stored on the server if autodelete from server is not configured in your settings”

Another suggestion: Changing the text to “Do you want to delete this chat? Messages will be not deleted from server by this action” + add checkbox “Also remove messages from server”