I NEED HELP WITH MY BOARDS I LOST

Hi all, I was on an education plan and I had important boards that I owned. When the plan ended I lost the boards, so I first fiddled around and deleted thinking because I had too many teams my work wasn’t showing but in reality it was the plan. I now am back on a plan but I do not see any of my boards. I was the owner of the team that I left so how do I have access to the boards again if they are important? 

I have the links to the board as well but when putting them in the browser it just says the link is expired. 

PLEASE HELP