You have made 16 posts. If you want to change your display name, I would recommend that you create a new account. In order to have permissions to change your display name, you need to be a VIP account, and in order to get a VIP account, you need to donate 50BTC, or about $2.6 million at current prices (when this was first offered the price of bitcoin was much lower). Sometimes the forum administration will change your display name at the request of a forum member if they have a compelling reason. I believe that in the past, compelling reasons would include being potentially doxed based on your current display name, being a prominent forum member, making substantial contributions to the community, and similar.
Instead of abandoning the account and creating a new one, why no find a lasting solution to resolved this?
To save mod from all the stress of having to change name request, why not make it open for everyone to be able to change theirs name at their will.
Something like a user will only have access to change name once in 365days!
In addition to DdmrDdmr's comment above, changing the display name opens up the possibility that someone could scam someone under one name, and immediately change their display name to something new. With some research, the culprit could be found, however, it would cause confusion, and may lead to some people giving up and not reporting a scam when dealing with modest amounts.