Was working Fine since I downloaded but all of a sudden it keeps showing connectivity error (code 0 or 4). Has been using this app under same mobile data & wifi operator for months and never had this issue before. Complained to the developer as well but no help as according to them it is an issue on my end. They did not believe when I said that others are facing the same issues as per online reviews. Loved this app, joined it for BTS daily used it but its sudden breakdown disappointed me.