Thematic Investment Charges on Sell and Rebalance

1 - Are there any charges when we sell, rebalance themes ? https://thematic.fyers.in/discover/fyers-themes

In one of the third party forums , it’s mentioned that when we sell or rebalance Themes, Fyers charge Rs.100 + GST

However, I can’t find any such information on the website other than https://support.fyers.in/portal/en/kb/articles/what-are-the-charges-for-thematic-investing

2 - Are there any charges for my own themes ?