Why did they let me buy AVUVX without having the minimum 5 million requirement?

AVUVX is the mutual fund version of AVUV.

it is an institutional fund that has a minimum 5 million initial investment.

i wanted this one for my IRA so i put in a purchase order for $25,000 worth.

fidelity did charge me a $49 transaction fee but they actually did let me purchase the fund.

just wondering why I was actually able to purchase for $25k when it says 5 million minimum