Hello, I have discussed this with the Moderator who Banned you. You repeatedly posted a flashing image in our server, something that can be really physically harmful for people with Photosensitive Epilepsy. You were warned about posting such images without a spoiler tag and you did not listen. So the situation is that we warned you about posting the image how you did and you did not listen these are perfectly reasonable grounds for a ban. I don't know what you think you're threatening us with but I can easily also ban you from here too if you persist.
I will also say that from looking at your messages you were not acting very mature or respectful towards the other members of our discord, we actually also have a rule about this. That makes at least 2 breaches of our rules which you agreed to when you joined the server. So no we will not be unbanning you from our server for the sake of our other members.