I am sorry, i m not a mind reader, i cn not tell what yor m/c is or is not doing that is why i ask as many questions as i do
, but seeing as you take days to reply ,its a "long shot"
what brand of soap powder are you using?
have you changed brand of soap powder at all (if so from what to what?)
If "shop brand" of powder, fill m/c with box of soda crystals, put on 90 degree wash and let it run.
if recently changed brand of powder see above
Reason is own brands stick and block interlock, interface, soda may clear it out, however if its a pure electronic interlock, you need a new one