hi Jon, Current "in-market" rateplans qualified for Tab starts at $35 (tab Small). Were your plan eligible for a Tab before?. If it was a BYOD plan for the start, then you might need to switch to a different plan to get a phone on Tab.
I switched from public mobile to Koodo about a year ago (brought own phone) received an email a few months ago that my spending limit was lifted and was eligible for a tab. Never mentioned that I would have to change my plan.