Thanks for your comment!
I've never heard of people having problems like this with the R-18 version or Android version from this page. But, I think you're downloading the wrong file!
The android version (when downloaded to your phone) should not show folders at all. It is a .apk file which is an executable file and should contain no "folders" when accessed from your phone.
Instructions:
-Be on your phone
-Download file named Tomai (ANDROID version) from this page on to your phone
-Wait for it to install
-Play it!
That should be it. If you're having other issues, I won't be able to help you since it is difficult to understand your problem and I'm not good with trouble shooting. (Sorry) But, you should post your question in your own language and hope that someone here can help you in the future.
Thanks for your support! Bye!