Group PQN normalization doesn't work-won't display the group selection

I have used PQN successfuly in the past but now the drop down menu won’t show up.

Thanks!
Georgia

Should be fixed by now

It got fixed! I calculated the average QC for each batch and used the “reference QC” option, allowing me to use Metaboanalyst for this normalization. Otherwise, performing PQN normalization manually takes time. Thank you for fixing this!