Comparing to Ethconnect, HBC is better by far though.
Just uses several tabs and try to submit as much as you can. Keep reloading the page and submitting, your hard-work will be paid off eventually.
My friend, we have tried that without sucess 6 days in a row. What are you talking about?You may need to optimize your browser and internet connection. Try to disable all extensions/plugins in your browser, and turn off all unnecessary background processes/services, also check your anti-virus.
For example, my Kaspersky inject their script into every webpage I browse, that makes your browser load slightly slower, so I turn it off when I'm buying any ICOs. Hope these help!