1 - Once logged in to your account on the exchange, go to the “API Management” section - https://www.kucoin.com/account/api
2 - In this tab, select the key you created for use in your account J'JO, click on the “Edit” button.
3 - In the tab that opens, without changing any of the other settings that you have set before, go to the section “IP restrictions” and use the ‘x’ icon to delete the IP addresses you entered when creating the key.
4 - After deleting the old ones, copy the new IP addresses you received from J'JO into the same line. This should save the new addresses.
5 - Click “Confirm” at the top of this block and now new, correct IP addresses have been added to your API key.