Robinhood Total amount restart?

I’m not too well versed into Robinhood or trading at all (I’m pretty new), but why did my total return amount for Bitcoin on the Robinhood app basically restart? It was at a little over 9% before yesterday and it was stocks that have been sitting there accumulating since 2021. Yesterday I check my Robinhood account and the total return amount went all the way down to about 0 percent ?? $Robinhood (HOOD.US)$