Cannot name a house in pocket edition

I spent money on the mineplex server and now I cannot use the items I bought because every time I Try to creat a house, no matter what I name it, it says "this name has bad words in it". (None of the names have ever contained bad words)

I cannot get around this and I do not see an option under "project" to list minecraft pocket edition. I need help with this or to have my money refunded.