hey man can you discribe some more?here's some solutions if it works,
if you can't download it then try to download it on other device (apk) then tranfer it to your phone it can be done through any device phone or pc or even laptop.HAVE A NICE DAY!!
try this go to Local/Android/Data then find the folder which has the game name then copy it and place it somewhere like downloads or something then uninstall the game and then try to install it.Maybe this will help if the game starts the paste the copied folder to the same location Local/Android/Data then you should have your saves back if you face any other problem i will be happy to help!HAVE A NICE DAY!!