This is a known bug when the License Key has been entered incorrectly. However, there is a workaround until you can get your License Key corrected for your site.
1) Download the file at:
[cart location]/admin/templates/product.form.tpl
using FTP.
2) Open the file in a simple text editor like Notepad or an HTML editor like Dreamweaver.
3) Find this section:
<div style="display:%%GLOBAL_HidePhysicalOptions%%">
<input %%GLOBAL_ProdType_1%% id="ProductType_0" type="radio" name="prodtype" value="1" onclick="ToggleType(0)"/><label for="ProductType_0">%%LNG_PhysicalProduct%%</label>
</div>
<div style="display:%%GLOBAL_HideDigitalOptions%%">
4) Replace it with:
<div>
<input %%GLOBAL_ProdType_1%% id="ProductType_0" type="radio"
name="prodtype" value="1" onclick="ToggleType(0)"/><label
for="ProductType_0">%%LNG_PhysicalProduct%%</label>
</div>
<div>
5) Upload the file by FTP to:
[cart location]/admin/templates.

The article has been updated successfully.