Custom proxy lets the Owner enter host, port, user, and password on the sender Proxy tab. Most workspaces should stay on Managed country. Do not paste inventory JSON.
Enter the proxy, then save
The Proxy tab is Proxy and canary. The intro says "Pick a country for a dedicated sticky IP, or add your own residential proxy. Required before connecting LinkedIn."
Sign in as Owner. The form is Owner only. Admins see a read-only note.
Open the sender and select the Proxy tab.
Select Custom proxy.
Enter Proxy host (placeholder proxy.example.com), Proxy port, Proxy username, and Proxy password. Leave password blank to keep the current one.
Set Protocol to http or https. Set Country code and Proxy type (Residential or ISP).
Select Save infrastructure. Success is "Infrastructure saved."
Required errors include "Proxy host and port are required" and "Proxy password is required". Protocol must be http or https.
Prefer Managed country
Managed country assigns the sticky IP for you. Custom proxy is the path when you already have a residential proxy to attach. Changing country on the managed path releases the current assignment and pauses LinkedIn until you reconnect.
After save, return to LinkedIn and select Connect to LinkedIn. If LinkedIn asks for a verification code, enter it on this sender and select Submit code. If an extra check remains, select Mark complete. Do not add a second sender.