Need Update for iOS 11 ASAP!! – Mind Wave - Binaural white noise Review

This app has long been a favorite and staple of my wellness routine - essential at times for sleep and relaxation - and seems to be that for many others. Regrettably, the app has inexplicably received no updates in a long time. As a result, following the latest iOS release - 11.0 or 11.1 - the app will not open at all. Please advise about status of updates, including eta, if possible.
Review by BhamHill on Mind Wave - Binaural white noise.