Not able to Join Job Tigers mostly you would have filled in all the form details & then clicked on the Join Button & the website does not Reload or navigate to the Next Step.
1) Fill the Join Form mostly the mandatory field's
2) Once you have Filled the Join Form click on the Join Now Button
3) Now in this step if you have the problem in registering plz do check if there is any dark Red mark (As in the screenshot) in any of the fields in the Join Form.
4) If you see any of those red mark just place your cursor over the red mark and find what's the error is all about now correct it & try again.