Sign/Shop Bug

Hello! It's Icescream88 here,

I was previously named "cookiekitten69" I changed my name about a week ago. When I put signs down for shop chests the sign automaticly changes to Cookiekitten69 and not Icescream88. The shop chest will work but then when I am offline it will not. Can staff please help with this.

Thankyou Ice-

Uh im going to look into this issue. it might take me a bit and i may need an admin but im going to look at what commands i have available and see what i can do