Part of balance disappeared leaving error message

I have had cointracker for some time now. Today cointracker is telling me I have a different balance than what I actually have, like coins have disappeared. I checked wallet and there still there. cointracker is giving me error message " oops, this doesn’t look right. See our FAQ for possible reasons". I have checked FAQ and dont see an answer for issue. Before today all coins were on cointracker. Please help.

Hi @DaMan,

Could you please message us at feedback [at] cointracker.io with permission to take a look at your CoinTracker account highlighting which coins are missing?