When you have a question about Eset product settings, you should first review Eset online documentation for the product you installed.
The Secured browser frame notification symbol is explained here: https://help.eset.com/eis/17/en-US/idh_config_opp_frame.html .
If you wish to permanently remove green browser frame and notification symbol, disable browser fame setting as noted here: https://help.eset.com/eis/17/en-US/idh_config_opp.html
Josepa gave kudos to itman in Why doesn't ESET take it seriously to explain their product well?
