Door won't remain closed and therefore won't operate. ? Problem with door locking mechanism

Possible broken/bent door latch.

replace door switches

The locking mechanism is not closing completely unless you slam the door because the plastic parts don't slide easily after a couple of years. We found that putting a small amount of vegetable oil on the 2 locking hooks in the door will allow the components to slide easily and close properly so the machine will function correctly.

Possible that the lock was broken and so the door opened. You can remove the front panel and check for broken plastic or nylon pieces which can be glued using instant adhesive.
Reset the lock and switch and the door must lock in correctly

For help with louver operation, see the owner's manual and for further help ask here.

The F9 error code refers to the door latch. The problem seems to be with the latch motor or a switch associated with the motor. If I am reading your question correctly you say that it would not unlatch and then upon resetting it unlatched but the oven won't work and you still get the error code. If so try resetting again but have someone come out to check it out or you will continue to have this problem.

The F9 indicates one of two possible problems. One you have already done and the other is the door lock mechanism. If the lock mechanism got stuck in between the lock and unlock neither switches on the lock mechanism are closed. This could be caused by a post on the lock mechanism that has failed.

I just looked up the part for the door lock and it is no longer available, with no other source for the part.

So I guess I would suggest having a technician come out and see if he can see if the lock mechanism can be fixed so the oven will work but you will no longer have the clean cycle working.
They may or may not want to do this for you, but you could use a local service company and they may be able to make it so you can use your oven.

I hope this helps (remember to rate and comment this answer).

Open the door on the inside top of the washer there should be two screws that hold it in place to the counter one might have backed out if it is all digital and has an electric lock find the cancel or reset button

I just had this issue happen to me last week.. fortunately I was standing in my kitchen when it happened... I heard a snap and then a piece fall down the inside of either the door or the front key panel.. I'm assuming this controlled the door locking/oven turning on safety mechanism. The inside light wont go off and it won't turn on to cook.. I am trying to figure out if it's worth paying to fix or just replace the whole unit!? Anyone know if this is fixable by oneself rather than spend a bunch of money on a service technician??