Washer not starting but powering on. We removed and cleaned the contro

When we turn on the washer, the start button will not work. We cannot turn the knob to a different setting or modify any of the other settings. We followed a YouTube video to run diagnostics and found that there were no saved error codes. Only 888 was on the display and off the buttons seemed to work in the mode.

We than proceeded to take off the lid to access the control panel to clean the contacts on the control board. We hooked everything back up and are still experiencing the same problems. Does anyone have any suggestions? Thank you in advance!