Non-responsive after loading

My app’s URL: https://polite-plant-3459.glideapp.io/

Often times, either I or users report after pressing the app Icon on their screen, a black circle appears and nothing happens - the data does not load even though they are online and connected. Then, after fully closing the app and re-starting the process, the red wheel appears - made by glide comes up, and the data loads. This happens with ALL apps i’ve made - not just the above. What is this? Thanks