Please add your address above the Address field where it says "Start typing your Address" and select one of the suggestions in the drop-down menu. Once you`ve selected a suggestion everything will be auto populated. Thank you.
I did that, and everything filled out accordingly except for the Street Address box, which was still unable to be clicked on.
After attempting it again to attach a screenshot, I tried a different address. Upwork notified me that the address couldn't be found and then prompted me to "add address manually" only after it couldn't find the different address. This seems to have solved it. I hope this helps to any others who have the same problem.