1. Convert black or white ip text file to database vise versa. After some time, if you find txt or table performance is worse, you can convert ip list.
2. Repair database, if file is too big that filled with spaces, or database is corrupted that cannot start up firewall, repair it.
Manually add or remove black or white ip to text file or database table. You can also remove black ip from memory by typing correct ip in text box.