In the DMARC Reports section, please enhance the feature with either further documentation or even better enhance the use of Tooltips. You have some Tooltips on column headings, but in many cases you are providing help for columns that are obvious or the Tooltip documentation incomplete.

I'm going to preface this with I'm not a DMARC expert so my definitions might not be completely accurate.

For example:
Compliance - Describe further what DMARC compliance is and I believe that is:
SPF Authentication Passes with Alignment
or
DKIM Authentication Passes with Alignment

DMARC failures - inverse of the above

SPF failures - I believe that requires only SPF authentication and alignment is not necessary. Therefore SPF auth failed.

DKIM failures - I believe that requires only DKIM authentication and alignment is not necessary. Therefore DKIM auth failed.

Then digging down into individual Domains similar column headings are displayed that would get similar documentation/Tooltips as above.

Then digging down into individual sources again we have similar column headings, but then scrolling down to Authentication details there is another opportunity for documentation/Tooltips...

You provide reasonable information on Protocol and Disposition and the Tooltips for the individual Reasons are good. However, the Detail column could use some clarity. I believe for SPF the Detail is likely the Return-Path domain that was used to retrieve the SPF record. While for DKIM it is the DKIM selector separated by a colon and the domain used for the DKIM record retrieval for the given selector.

In many cases the people responsible for these kinds of reports are not full time Email administrators, but rather someone from IT who works Email health as one of many of their administrative duties so the definitions of these headings are not necessarily something that is easily retained over time.