The front doesn't come off I'm afraid.
You have to change the seal by working through the port hole.
It's not an easy job as there isn't much room.
Tilt the machine rearward a little so the drum falls back.
This gives you an inch or two extra room.
Good luck with fitting the seal and the retainer.
Let me know if you get stuck or need more help
Thanks for coming back and letting me know how it went.
Glad you got it sorted out.
Good luck with the appliance.