Default Confused whether i am root or not?

Hello everyone this is my first thread on this forum. I am having a strange problem in my galaxy s duos 2 few hours ago I've successfuly rooted my phone with Vroot but when i check root status using root checker it says you aren't root. Have a look at this...
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I was even more confused when i installed titanium backup with no errors and it was able to access root files.
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Any ideas???