hi, not sure how to do it? mind to guide me ? haha not so expert in this kind of stuff.

I did try to uninstall the old wazapp, delete the .wazapp folder, and install it again with last nightly version of wazapp. At first, it didnt work, still stayed the same, however, after i leave it for the whole night, it works again. However, i got new problem, my wazapp doesnt want to sync the contacts, there is no contacs on my wazapp.