I just got my invite to use this awesome web app.
I noticed that I can't upload an avatar nor a background image, in the settings page when I double click the avatar button, a modal shows up with two buttons (upload local file, and cancel). But I can't use either of them, they don't respond. I have to press the device back button to get the modal out. (BTW, back button takes me back not to setting page but to the previous one, my homepage)
Device used: Samsung Galaxy S6 Edge
OS Version: Android 7.0