pm us with email account we will give you 100s proxies for test 
We mostly provided public Elite HTTP /HTTPS proxies. the scrapebox has no option to test Elite proxies.
We recommended gsa ser tester or any Elite public proxies
Please open a ticket through the website with your bhw id. we will help you
I opened a ticket about this, as you requested. Support responded telling me not to use scrape box (even though the name of the service is scrapebox google passed proxies) but to use SER. Then support deleted the ticket. I can't reply back with what I am posting below, which is why I am posting it here, instead of talking to support, since my ticket was deleted.
I have a license to SER and have been using it since 2014, scrape box since 2013. I know how to test a public proxy.
If you look back in this thread, Ive been a customer of yours on and off SINCE 2014! Back when GScraper was still king.
I tested your lists yesterday, as soon as they came in my email, with SER, as I was told to do. The results were even worse than in scrape box using multiple options to test against, and custom URLS. More than 90% of the list is not working as soon as it arrives. By not working I mean NOT WORKING. Not google passed but NOT WORKING. I don’t even need google passed proxies I just need the public proxies to be anonymous!
Today is Tuesday. I am supposed to receive two proxy lists.
I have not received any proxies. Both lists always have arrived by now at 3:38pm EST. I hope I get the lists, and continue to receive them, because I paid $32.00 for a month worth of lists from you with working public proxies in them.
As of right now, this is not looking hopeful to me. I am very disappointed.