I updated BO Tester three days ago.
The update reflects on the Bollinger Bands and Envelope indicator.
The logical rules: "The bar opens below the upper band" and "The bar opens above lower band" were removed because result to ambiguous bars when the bar opens between the two bands.
The explanation is very simple: "The bar opens below the upper band" means that the app rises long signals when the bar opens below the upper band and rises short signals when the bar opens above the lower band.
When the bar opens between the two bands, both long and short conditions are satisfied. If the Bollinger Bands and Envelope are the only indicators, the app cannot take a clear decision for the trade direction. We call such bars "ambiguous".
The above rules rise long signals when the bar opens below the lower band because the short signal is no longer satisfied. However, it is not very clear when you look at the indicator chart why the program opens Up orders only when the bar opens below the lower band.
In order to prevent such misunderstanding cases, I decided to remove these logical conditions. (It was a mistake that they were available initially)
You can receive the same results when you use "The bar opens below the lower band" and correspondingly "The bar opens above the upper band".
So, to fix your strategy, click on the Bollinger Band and set "The bar opens below the lower band" logical rule.