Calculate energy usage between date range in Energy Dashboard

Hi Guys, Hopefully a simple one for you. As a newbie I am sure its user error on my part!

I have several energy monitoring plugs, they were flashed by me and I Installed Tasmota on them.

I have plugged in an electric heater in my shed, and it’s on a timer. I have gone to the energy dashboard and I select a date range of 1 Week, Lets say we use 3kwh per day, I would expect to see 21kwh for my selected date range of 7 days

The Dashboard shows my total energy for the plug, meaning if on 1st October I used 10kw and I run a report from 2nd to the 9th ( 7 days of 3kw ) it shows as 31kwh so I manually have to deduct 10kw rather than it just show me my 21kwh for that date range.

is there a way to see total energy by a date range and not total energy + my date range

where am i going wrong?

Thank You

Have you added the individual devices in the Energy config? Mine is showing usage for the selected date range.