@pensioner600 let's continue our discussion about sqm from here:
in this thread.
To understand where you are I would like you to switch back to sqm-sxripts and post the output of the following commands for the manually started sqm instance:
ifstatus wan | grep device
cat /etc/config/sqm
tc -s qdisc
This should give me an understanding how things look when they work and then we can take it from there...