When Adobe announced they are ending support for IE11, are they saying users logging into Experience Cloud with IE11 will have issues or that Adobe is no longer identifying the IE11 browser in it's Browser report?

I can't get the Compare Time Periods feature to work at all.  I have a freeform table with a PageName value as the row, and Visits as the metric.  When I right click on the PageName value I don't see Compare Time Periods as an option.

How do I track when a mobile app user scrolls through a long screen and stops at a particular set of content, spending graph v. map to vendor v. offer or campaign?  We want to track engagement but also be able to do A/B or multivariate testing on placement of particular components in a single mobile...