Unresolved7day game time/game testing

So guys i heard about something that 7day game testing that is for bf4 and i can make multiple accounts over and over so its free is it working?? origin wont detect the multiple accounts??
https://www.origin.com/en-ie/store/free-games/trialsⓘ

Le saviour here it still works you need to change your hwid whenever you want to make a new account search up how to change hwid

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oh yea heres a tutorial http://www.wintips.org/how-to-change-hard-disks-volume-serial-number-volume-id/