HOpefully this is useful; I don't have anything that can open the files to see if they're what you're after, but the first google hit I get for your thread title's phrase "ANT bms app manual"
finds this page
the ant bms app down load, the user manual and the videos.
www.rjxzstech.com
that has this link
drive.google.com
that has a zip file with instructions, etc.
Another link found is this
that has connection diagrams, but I don't know if it's for your specific BMS model
There are several other PDF links found in that search that say they are wiring diagrams, etc.