I'm currently on the $40 tab s plan, but want to switch to a $40 no tab plan since I brought my phone from the U.S. I have a positive amount listed on my tab, so I should be able to do this since my tab is paid off. I can't seem to find a way to switch tab plans since every time I select the plan I want, it takes me to a 404 page. It is so annoying since I want to take care of this today. Any assistance would be appreciated!