The answer above (slide the strips off the end where the bag goes) is OK. I was able to nudge the cord holder and get it to rewind.
Watch for a little [vacuum hose?] that can come off the inside of the top.
Note: when the housing cap comes off the end away from the bag end,
mark which way is up; then remember to put it back when you are ready to Force the top & bottom of the main housing together: not easy.
Jim
July 2022