If crypto prices are higher than when you first took out your loan, you can refinance your loan to access more USD. The amount of crypto you have posted with BlockFi will stay the same, and you will receive more USD for the value of crypto posted.
Example:- If you took out a $10,000, 50% LTV loan when the price of BTC was $6,000 and the price of BTC doubled to $12,000, you would be able to double the size of your loan to $20,000. In this instance, you could submit a new loan application for $20,000, and the additional $10,000 would be funded directly to you!