Purchased MyBestBuyPlus and TV at the same time

Online- via an online invoice for each after speaking with a magnolia staff. Online account shows only 15 day return window instead of the 60 days. Support is telling me i can still return it after 15 days, even though the return button will dissappear. They say there is no way to correct this in the system and that items only show the standard 15 day window always.

Can someone confirm items should in fact show the correct return window in my online account? And if return date is in correctable in the system? I tried 4 different agents.