18.104.22.168. Error 530 User denied by access rules
In order to increase account security, by default, all hosting clients have access protection by FTP from specific IP addresses. When ordering a hosting account, the network of IP addresses from which the service was ordered is automatically added to the list of allowed addresses, as well as the IP addresses from which the control panel was entered.
To fix the situation add your address to the allowed list and try to connect again.