IP-Alert by Seller Assistant supports Chrome browser.
Detailed instruction how to install:
Go to Chrome Store to install IP-Alert by Seller Assistant
Click on "Install" button
Click on "Add extension" button
System will redirect you to Seller Assistant website where you are asked to finish the setup. Press "Continue"
After that you will be asked either to log in or register to Seller Assistant account
You can also read What is IP-Alert by Seller Assistant