Not working – منبه صلاة الفجر Fajr Alarm - Year round Dawn time calculator and muslim prayer clock for the "four seasons" Review

Not working with IOS version 11, please update it. Gazak Allah kol khair.
Review by Ayman Ibrahim on منبه صلاة الفجر Fajr Alarm - Year round Dawn time calculator and muslim prayer clock for the "four seasons".