Malber P21 washing machine works very slowly?

Hi, My Malber P21 is 7 yrs old and has been working perfectly until a week ago. Any cycle takes 3 times longer than usual, and the machine keeps pausing and "thinking" all the way till the end. It feels like it is straining and might just stop dead at any moment. What might be the problem?

The machine has never been serviced, so I don't even know where to find a repair technician if I can't do it myself. I am located in Brooklyn, NY.