alvinroston

please help. everytime i try playind dokkan battle again. it downloads the updated stuffs. then when it is full. it say that my internet connection is not stable. ive been trying my internet and at the office at its still the same. this is the 2nd time i had this problem. the 1st one was also insisting that my internet connection is not stable even after downloading the updated version but luckily it went normal after restarting my ipad and deleting the app then downloading it again. what can you suggest? what do i have to do? please help. thanks :-)