There are currently a couple of known issues with Timely caused by an update earlier today:
1. Unable to delete payments from invoices
2. Display issues for Firefox users
A fix for both issues is expected within the next 30 minutes. For issue #2, you can use the Google Chrome browser as a workaround. You can download and install Chrome here: https://www.google.com/chrome
We will provide a further update when the fix is applied.