My SB can't find url list?

i use sb find url comment list keyword "car"
and click "Start Harvesting"
it can't find,
SB say:
Harvester completed.
Harvested speed was about 0 url's/s.
and status : Error 302 (IP Blocked)

well look at the status Error 302 (IP Blocked) it says it all
when harvesting use a pile of public proxies

i use private proxy

Are you kidding private proxies for harvesting!
ofcourse it will get blocked, private proxies are for posting

for harvesting use as much public proxies as you can and set the max connection 2-4x your proxies numbers and then enjoy harvesting

I'd recommend you download some scrapebox guide (just search the forum)