Money order or rent

Edit: Western Union is no longer allowing digital banks for money orders. I.e. affirm no longer works.

Forgive me if this is a dumb question but it's there any way to use affirm to help me pay for rent? I usually buy a money order and since it counts as a purchase I can do at stop and shop, I'm curious if it would work or not. I'm Likely going to be a little short for rent this week and my spending power would cover it if I could find a way to use it for rent. If someone has a tactic they use I would really appreciate the advice.

(Please refrain from making rude comments, I'm already having a trash week please don't add to it). Please let me know if this post is against the group rules.