Outdated System Webview To avoid any errors, please update it from the Play Store:
  1. Update Google Chrome from the Play Store, if this does not fix the graphical issues, proceed to step 2.
  2. Update Android System Webview from the Play Store.
if you are still facing graphical or crash issues, please contact me at ching.huang.dexter@gmail.com. I will try my best to help you personally.