Multiple 4K boxes

I have Bell Fibe FTTH. I have 2 4K boxes as I have 2 4K tv’s. After 2 years I am having issues with the main box. Recordings are failing and other issues. Called Bell customer service and was advised you can only have 1 4K boxes in your home. This makes no sense to me as many houses will have more than 1 4K TV so why would you not have multiple 4K boxes? Has anyone else run into this issue? Is there a work around?