What is going on?

I love the simplicity of this app, is exactly what I was looking for.... But, there are some mayor issues right now (i dont know if its the actual version or not): the first one is that one cant put decimals on the amount, it just makes it zero or the non decimal number (a.k.a I cant put 0,60 it turn in to 0 or 3,30 into 3), the second one I cant read the menu, is like the background and the letters are with the same color so I know there is something written but I cant figure it out what they say, and last but not least I cant sing up (or in) it appear a message that has the same letter issue so I dont know what I have to do..... Please fix this problems and youll have a great simple and practical app

Mikatsume about WellSpent Free -Simple and Sleek Budgeting App That Helps You Stick To Your Budgets