Unable to update health tracker

When I try to enter my new weight the numbers that I'm typing don't show up in the box. So I can't update my current weight. Anyone else having issues? I'm doing this from my phone but I've never had a problem before doing it this way. 

Try to do it on your computer and let us know if you're able to update it.

I had the same issue when using my phone. On the computer, it updates as usual.