GB traffic, targeting segments and sticky sessions.
You prepay GB packs from checkout. Usage deducts from the residential balance as requests flow through the gateway. Top up more GB anytime — there is no calendar-month wipe of unused prepaid traffic on standard packs.
Append segments to the gateway username: cty-{ISO2}, optional st-{state}, optional ct-{city}, plus sticky ss-{id} and tm-{minutes}.
Do not send cty-ALL for worldwide — omit the cty segment instead. For China (CN), never include -st-*; state tokens cause CONNECT 502 on gw.ipproxy.co.
Add ss-{sessionId} to keep the same exit for a while, and optionally tm-{minutes} for the sticky duration. Generate fresh session IDs when you want a new peer.