Literotica is blocking based on user agent string. Quick fix is to change it to chrome in the personal.ini.
Click FanFicFare -> Configure -> personal.ini -> Edit personal.ini
Add this line right after [defaults]
Code:
user_agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36