Creating Spouted Beds Using STL Files Has Been Diverging

I’m trying to create a geometry by importing an STL file, but the calculations keep diverging, I’m not sure what’s wrong? I attach the .stl and .mfx files for your perusal. And my version is mfix-21.1.4.
geometry.stl (3.8 KB)
geometry.stl (3.8 KB)
geometry.stl (3.8 KB)
spout.mfx (12.7 KB)
BOX1_FACETS_IGNORED.stl (25 Bytes)
geometery

Thank you very much for your kind assistance and time.

I’m not sure you attached the correct files - there are 3 copies of the same geometry.stl

Please use ‘Submit bug report’ from the main menu to create a zip file for upload. This will also contain logs and other diagnostic information that is helpful to us.

spout.zip (16.2 KB)
OK,I resubmitted the case file and bug report.

Thanks for your help