Having Issues with Proxies and Submitting

I have been trying to build some revenue by submitting vids to some of the top free porn sites. It was going well until Monday. I seem to be getting the error "check your internet connection" on pornhub and youporn. However xvid has been working fine. I am running my cleaners, clearing my cache trying to get my head around what has changed. I do all this through FireFox. I do keep open Chrome as to keep another page open for keywords. But I have been doing that all along. Is it my ISP? Are they dropping deep cookies in my system? Any advice?

Thanks,
Chris

Does the issue happen even in a private browsing window? Could be proxy detection or your IPs were banned.

Do you use proxy/vpn? I agree with RotatingProxies.your proxy/VPN/IP in blacklist