Ok sir i did a little research on this apk to possibly find the cause of this bug on your device,and it turns out for this application to work you need more than this apk, as well you need an Android wear smart watch, to emulate a CGM(continues glyclouse monitor) and github as well as the apk for the Android wear, the system operating program seem sound but the program itself is an unofficial apk making it more than likely to malfunction because it running on a different operation handlers that might not be licensed by Google or Android, and with an important purposes such as someones health at risk, I feel theres no room for mistakes even little ones that cause your phone to malfunction in anyway, i implore to you sir, to reconsider and take precaution when using this monitoring system, because it would be most unfortunate if the next bug crashes a more important action than just the icons, and further more i would only suggest trying to obtain an official cgm with the main and only directive is monitoring your glyclouse levels,I can't stress the importance of diabetes and its medical health procedures, I lost my father at the beginning of the year due to diabetes;its a swift and vicious condition not to take likely, especially for the reason to be moderately fashionable.I have been working on a android application for diabetics dedicated to my father labeled a way to "live" with diabetes,is mainly an health manual for diabetics,wouldn't been designing it if I really didn't take this subject serious,or atleast hold off on complete reliance on this apk until its been medically safe use, while readind its review i notice no me tion of that approval, sorry if i seem a nuisance and thank you for giving me the moment to voice my opinion, i wish you a lifetime of good health and good luck!