Thank you for reporting this.
I tested this with cTrader 4.4.15 and it is working fine on 1-hour Renko Charts, but starts to plot the text incorrectly below hm4 minute charts.
We will need to add a limitation on the product page that this tool does not support timeframes on Heiken Ashi charts below 4 minutes until either we or Spotware find a solution.
If you purchased this product feel free to request a refund on your account order page.