Replying to Creating a new Shredsauce account

Yo I made a shredsauce account when I was like 8 and i just used my full name and now I dont want to use my full name. I tried making an account many different times and ways. I used different emails, new emails, I cleared my cache, tried a different computer and tried using usernames and passwords that I promise nobody else has thought of and it always just says theirs an error creating my account. Can somebody tell me what i am doing wrong