If you log in and your portfolio tab or watchlist tab are blank but you were certain you had data there, then there is a chance you have toggled the reversal app switch.
The reversal strategy app looks for stocks that are making a retracement and is used to make an early entry trade vs a confirmation trade using the trend following method.
The toggle is in the upper right corner of the page.
Reversal Strategy Toggle Position
Trend Following Strategy Toggle Position