If you haven’t figured it out yet or got a response yet, hop onto the instance admin group on matrix for Lemmy (details are on the GitHub or join Lemmy page somewhere I believe) and one of the many other folks running instances can probably walk you through it
Generally, if in the same country you’d have to comply. As another example though: If your server was in Canada, and some department in Alabama wanted your data, you could tell them to pound sand. Though they may put some sort of warrant out for you for failure to comply (doesn’t matter though if you never go there)