I don't think you're allowed to create this Flag:
Type --2 Flag said, "This user violated a casual or implied agreement with me, resulting in damages".
This statement is incorrect considering this:
I was not working with them back then.
This means you're not a victim, which means you're only allowed to create a type 1 (Newbie warning) Flag.
See:
Creating or supporting a scammer flag is actively affirming a set of pretty clear fact-statements.