Since the control is not unlocking the door, you can manually unlock it by
unplugging the washer
and removing the bottom front service panel as shown in the image below. Your washer may have 3 screws instead of 2. Remove the screws and pull the service panel forward and then off of the washer. You can then carefully reach up along the inside of the front panel and pull down on the manual release tab that is on the bottom of the door lock assembly until it clicks. You should then be able to open the door.
Once you get the door open, check for water in the tub. If the tub does have water, then you can use a wet/dry shop vacuum to remove the water. Place a shallow pan under the pump clean-out filter that is shown in the second image (with the washer still unplugged). Pull out the clean-out filter and check for a clog or obstruction in the drain pump. Check the drain line and the washer drain for a clog or restriction. Reassemble the washer and test it. If the washer still won't drain and you find no obstructions in the drain path then you could have a failed drain pump.
If the washer was not full of water, then you could have a problem with the door lock assembly. The third image shows how to access the door lock assembly. With the washer still
, access the door lock assembly and check the wiring harness connections. If these connections are okay but the lock assembly will not unlock and lock properly then you may need to replace it.
When the washer was beeping, it probably recorded a fault code even though it did not display it on the console. With a full model number, we can normally provide you with information on recalling a saved error code that can also help you diagnose and repair the washer. Reply with that full model number if you need more help.