It could be a possibility installation didn't complete properly.
Also, could you confirm your android version?
Let us know if it still doesn't work.
I have followed your instructions and it shows that Adobe is successfully installed but it does not show up on my list of installed apps.and there is no icon on my android face My android is a Neocore series ! i think.Therefore there is no way i can open it still.
Thank you, Owen52127671