@Christof+, I found a bug in your "Free RV Real-Time Tool". I noticed that when I request RV data for calendars, the tools sometimes does not show the most recent data. For example, on 13.02.2020 I ask to plot calendar RV for NVDA, and the tool only shows data from 06.02.2020 and before that on the charts.
It turned out the problem is how dynamic named ranges Cal_* are defined:
=Calendar!$AS$6:INDEX(Calendar!$AS$6:$AS$293, COUNTA(Calendar!$AS$6:$AS$293))
Index 293 is not big enough to hold all the historical data that IB returns (especially for intervals like "5 mins => 1 week"). After I changed this index from 293 to 2000 everywhere in the Name Manager, the charts started to plot correctly:
=Calendar!$AS$6:INDEX(Calendar!$AS$6:$AS$2000, COUNTA(Calendar!$AS$6:$AS$2000))
I'm not providing a fixed Excel Sheet this time as I made some other test modifications to the sheet that other users may not need. But I'm reporting the bug here.
The same bug should also be present on Straddle page with Stdl_* dynamic named ranges, but I did not have a change to test it.