Hi Richard,
Please don't think your scans aren't welcome and wanted on DCM! We just need to sort out some bugs is all. Once we get the procedure figured I'm sure things will go smoother in the future.
Sadly you've switched from ZIP to 7z format for your latest uploads.
We can only use zip/cbz or rar/cbr files. We prefer you use zip or cbz files though. I believe CB+ feels the same way.
The 7zip app will allow you to create a zip file if asked.
Could I ask you to recreate your two latest uploads as Zip files and upload again?