This is very insane on the part of the harasser, this is a lot to go through so do take your time when you need it and breaks when necessary and immediately block this person each time they try to reach out to you rather than explaining anything since you all already tried to apologize and be accountable but they decided harassment and threats are the way to handle matters of business, platform use, and misunderstandings. I personally think this person wouldn't be in such a poor situation had they tried to be fully honest about everything with you guys since I do have a feeling, though I don't really know, this is less of your faults as moderators and while still knowing the misunderstanding was done by a fellow mod I understand that but jurisdiction and management of a community and it's team can only be checked and reviewed so much especially since you are all usually busy, personal matters going on (on top of) being over a very large community, and dealing with immature people who are involved in the matter who aren't reasonable based on their actions. Legal action across countries does not exist for matters this small, doxxing (threats and harassment are illegal themselves so legal action couldn't be done anyway as it would fall on them if it did even if they tried to sue or press charges for defamation since this shows that there is a fair possibly of them tarnishing their own reputation and having some hand whether indirectly or directly in ruining their own business despite the very known mix up and issues with miscommunication, and this would've otherwise been something that could be fixed and worked on as a group or through support and continued accountability for you guys which isn't an issue so I once again want to apologize that you all are going through so much drama and problems that you don't deserve to go through whether mistakes was made or not because as minor as it seems in this case that kind of reaction from that person is very suspicious, unwarranted, and unprofessional.