Small scroll up, at max half a post, usually pulls the menu down for me to see the 3 dots and be able to refresh or goto top
The dots on the upper right can be hidden at times when scrolling.
I find going a post or two down the line then scrolling slightly up can make them reappear. Then you can use the refresh feature.
Looks to me like the expansion is 9.99. But the base game is free. Hope that helps