Hey there @agan! I just took a look at some of the provenance from your bray curtis emperor plot and noticed that you ran the command with the custom_axes command set to DaysSinceExperimentStart, which, while not unique to the Moving Pictures tutorial, does look like you maybe copied and pasted it from there? Anyway, then I opened up the metadata.tsv file embedded in it and noticed you have a Metadata column called DaysSinceExperimentStart, but it is made up entirely of zeros. This is why the plots look weird - one of your axes has no variation in it.
A quick note about Metadata in QIIME 2 - there are no "required" columns from the QIIME 2 perspective - this should be all about your study - what are the things relevant to these samples that provide additional context during interpretation? Anyway, I recommend you spend a little time reading the Metadata in QIIME 2 tutorial to familiarize yourself!
Anyway, rerunning the emperor plot step without specifying the zero-variation-column looks like this:
