Firstly, thanks very much for all of the work to make Wazapp. Great to have it.
I have found that if I don't shut the program down from the menu, regardless of how I set up my phone, Wazapp will keep asking for a WiFi connection, even with all settings for internet connections, wifi, etc. switched off.
I had set all internet to off, in order to prevent roaming costs, but the requests were extremely persistent and interfered with navigation.