Hello author, I currently experienced the Android version, at first I found that there is no save button, but also a sudden flash back, I do not know if it is the problem of our folk Chinese group or the problem of the game itself.
There is no official Android version yet, right clicking on a computer would normally bring up a menu to access saves. If you mean the actual button, make sure you are on one of the numbered pages or the quick save page and press one of the three slots on the left.
