I was occupied today , so didn't do too much with the platform, but same thing again. Backfilled at 10:30 am , and then bad volume data until the reset after hours.
I think it may be Ameritrade not connecting properly on the computer waking from sleep, have had to relog in a few times , but not 100% on that . Will try to figure it out tomorrow.
Was still getting the quotes all day (obvious, as the chart is complete, and theres no other source), so the connection was working as far as that goes, don't know why real time volume is so incorrectly low
Using the @ESM20 symbol not @ES , which has worked fine till now.
Heres todays chart , easy to see the 10:30 issue, where volume is next to nothing all day after that (nothing magic about 10:30 , thats when I started it up)