First try performing a hard reset in your browser by doing the following:
If you're on Windows/Linux, hold down Ctrl and click the Reload button, or hold down Ctrl and press F5.
If you're on a Mac, hold down ⌘ Cmd and ⇧ Shift key and then press R.
If this doesn’t work, the issue is often either we’re not reading your wallet, or our API is down and will be back up shortly.
If the issue persists, send us a message or put a message in the #help channel on our Discord.