Pls comment your opinion
Found an error on first click! Did you test it yourself?
Random page works.
The design is dull. It doesn’t tell the user what is going on either.
The app is working, I don’t know why you have a mistake. About design, I focused on functional part
Some background reading for you https://hackernoon.com/what-is-ui-ux-design-1f01e9dbbf02