Sorry haven't heard of this.
I dont have anything in my dashboard.
Found this on LC FAQ though which might explain what you posted about.
Why does my investment account not show a net average return (NAR)?
Calculating a representative NAR is in part dependent on sufficient data existing for the calculations to work on. For this reason to be included in the calculation a loan note's opened date must be at least 100 days prior to the calculation date. If no loan notes meet this criteria no NAR will be calculated or displayed on your investment account.