Please, please, please do not hesitate to message me or another staff member if someone is using our site's private messaging system in such a way as to make you uncomfortable. You have every right to use our site without being subject to private messages that make you feel unsafe or uneasy. You should never feel pressured into not speaking up.
Every private message chain has a block and report button underneath that allows you to quickly and easily block communications with a specific user, and (if you choose to) submit a report to the administrators so that they can investigate any relevant message chains and act in your best interest to keep you safe. If you'd rather talk about the situation with a site moderator, we can also forward your concerns to the admins (with your permission). Reporting a user through their profile will also put the situation on our radar so the team -- as a whole -- can put energy into investigating the situation for you.
If you have any questions, feel free to reach out. Drzzter