All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
Having a place to live in is one of the basic needs that human beings cannot do without. If you do not own a place to live in, and you cannot afford to rent one unless you repay that debt, and there is no way to repay it except through the two options mentioned in the question: reopening the case, which makes you liable to the interest rate imposed on the debt, or requesting a Riba-based loan which incurs interest as well, then there is nothing wrong with choosing one of the two options within the scope of need only. Note that necessity must be evaluated according to its proper magnitude. Therefore, you should choose the option that incurs the lower interest rate.
Allah Knows best.