Since you didn't provide any evidence, I went looking for this "trouble". I did not find any contributions from this accused user, except for politely answering questions you asked. For the rest of us, looking in from the outside, that does not constitute harassment. Under no circumstances would Fanpop ban a user for politely contributing. In fact, inciting people to report a user like this, when there is absolutely no public evidence of this "trouble" is probably more likely to get you in trouble than the user you target.
If this user is editing their abusive comments or deleting their abusive comments (but gosh who would ever do that, right?), then take a screenshot of the original abusive message and save it, so that you have the evidence to share if you need to report.
If you have a personal grievance with this user that is occurring privately, take screenshots of the abusive as evidence.
Fanpop doesn't ban people just because you get a million people to report them. They ban based on evidence.
BUT this is all moot because Love_Equation's account is no longer live. Leaving this answer here for future spoons looking to stir the pot.