I traveled to another place, stopped using wazapp, then once I got to the hotel in overseas, I used wifi and received wazapp message, but as I went back to my home country, I tried to connect but failed, it showed "connecting" but never really connected to wazapp, I took out sim card, I uninstall wazapp then install it again, tried at least twice and still getting connection error, HOW TO SOLVE this issue, please HELP.