Navigate to rotating proxies
First log in into your account, and navigate to rotating proxies, residential or datacenter. Make sure you first purchased some traffic.
The allowed traffic you have will appear in the left sidebar.
Create your configuration
In the picture above you have:
IP to connect: this is the IP and port to which you will try to connect in browser
Is Sticky: your connection will use the same proxy IP for how long is possible, this will generate a Session ID for example if you don't want to change your proxy IP at every request, you enable Is Sticky, and you cand manually change your IP address, by creating a different Session Id.
Secure Request: used to create a TLS secure connection between the server you are connecting and our exit nodes. This will slow your traffic.
Country: - Select the Country you want to connect
Generated JSON to generate proxy password: This is how your configuration is looking, from this JSON, your proxy passwod will be generated
Proxy Password: This is the proxy password which you will use to authenticate.
FireFox Configuration
To authenticate, you will use your Username, and the Proxy Password which was generated at the previous step from the JSON file.