There are plenty of more legitimate ways you could have earned a shiny mod.
In my personal opinion, this should be an eye opener for you to not take everything at face value and to look into possible scams before falling for them.
If it looks too good to be true, it normally is. Next time, you should report that player instead of following them into breaking Discord's TOS yourself.
As for if you will be unbanned or not, we staff will have a conversation on this and get back to you.