We will look into it in a future update. However, this can be solved quite quickly. We suggest using Lychee which is much a more stable software. That way you can open the LYS file we have provided. Take a look at the screenshot of the LYS file provided for the same part. using the LYS file you can either slice the file through there or re - export a supported STL so you can use with any other slicer you prefer.