Like many have said, the staking button is too small initially. I think it would be best if it remained the same consistent size before and after an amount has been staked. Instead of displaying the amount staked it could have a snappy slogan that entices people to stake (e.g. Earn Interest on Your Nimiq).
Secondly, I think the line graph on the amount page is superfluous. I think it would be better just to list the amount earned at each increment rather than pinning it on the graph. Sure, it loses the implication that it is cumulative but I’m sure that could be added in some other fashion. If the graph is to be kept it should be stripped back (e.g. get rid of the unnecessary gridlines) and maybe alter its increments. I find 4, 8, and 12 to be a bit awkward: thinking in thirds seems weird when talking about a year. The middle value should be 6 (half a year is six months). Perhaps showing 0, 6, and 12 would be better? The window should also give you the option to type in exactly how much you want to stake instead of relying on a slider.
Lastly, for people saying the screen is too complicated, you need to remember that the example given is not what users will see when they open their first wallet: they will only have one account and no transactions. As such, there will be plenty of whitespace initially. This will only fill when they start using the wallet. This means it will only get more complicated when they engage with the wallet.