This PDF missing some tiles, why?
ArcPro layout seems fine
nearmap are using arcgis market place purchased nearmap imagery web service
here is why
https://help.nearmap.com/kb/articles/277-arcmap-printing-nearmap-wms-imagery-to-pdf
Fix is simple as, set resolution DPI as 300 when you export PDF
Ignore ArcMap's setting, ArcPro don't have these setting