But best idea might be to turn off nsfw and block/report/do etc. stuff with everything that is not in place in main feed. If admin(s) not responding they might be busy so waiting is the best so far this time, also it's June right now btw, the most intensive month of the school year. Anyway, the domain might eventually expire if the site gets abandoned so don't forget to backup your stuff before leaving and then you could use an alternative platform and invite your friends if you'd ever want.