hello the suction power is not so strong with my appliance
but it is enough for the bread crumbs.
try vacuuming without the filter if it doesn't draw well then it is.
or try with a new battery
ok ciao

For me, the machine always sucks too little. Was it better at the beginning?

. .in this case..return and replace under warranty!

Is it strange that if everything is clean it no longer sucks? Aren't the tubes blocked? Maybe a motor problem?

Seems to me to be a defect. Return with it.