You have to pull the washer out and start work from the back. The top comes off.
I have one about 12 years old. Parts like the motor or circuit boards are expensive.
To fix mine, motor got wet, I bought a used one for parts.
Splendie and all the compact washers that have soap on the left and knobs on the right are made in the same factory. Whirlpool, Kenmore, etc. So many of the parts are the same. But because of different features the circuit boards and wiring harness are different.
First make sure water and water pressure is reaching the washer.
Not filling can be caused by the door not fully closed,
or bad water level control switch will stop filling. Check the switch for function by blowing air into it and check continuity. It"s a common switch and inexpensive. There's gotta be an appliance supply in Seattle. They sometimes have booklets on specific brand repairs.
Also the hose connecting the switch can go bad and leak air pressure.
There are 2 circuit boards. You don't want them to get wet ever. $
Lots of help on the internet. Try Youtube. Ebay will have some of the parts for much less than Splendie.