I using JMeter for QA automation tools, I've tried some ways to log in, read from blazemeter and jmeter manuals, read about oAuth, I also make JMeter use browser(firefox in my case) to log in (but i didn't understand that much) but still didn't pass it

I also ask to the IT who responsible for the site, but he never use JMeter too before, so he didn't know how to solve it

The most responds I get from JMeter is "redirecting" which is as far as I know I have issue with the oAuth

I tried it on demo.a

Can anyone give solution? Thank you