A limit of 4 layers for the paid version?

Several months ago, I bought the expansion pack specifically for more layers. It was wonderful to have the ability to add more than three layers! Today, I tried to work on another project but Autodesk only allowed me four layers! Why? I paid what, $0.99-1.99, specifically for more layers and I come back to see the limit is only four?! On old projects that I have over four layers, it still allows me to add layers, but not on new projects. Its sad to see such a great app limit the creativity of the users. Until the four-layer-limit is removed, this app will receive one star from me.

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