It is a good machine and still has life. The most likely cause is loose or broken damper springs. You would need to remove the top to check. If it feels loose at the back, (the front of the drum moves up and down), it is likely the rear bearing.
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If your washer isn't spinning properly , it could be because of an unbalanced load, which makes it harder for the drum to spin. An unblanced load also cause errors. "Ub" or "Ur" display is one of the sign that your washer is unbalanced. This may be because the washer is lopsided or because the load inside is uneven.
Old Navy wants too much for free . we diyers learn by doing for our selves .when I can not fix I either junk it and get new or call the local repair service to have it cat least checked out .
The Start/Pause button merely pauses or reactivates the Child Lock feature. With the Child Lock feature paused by pressing and holding the Start/Pause button for 5 seconds, press Menu. Then press the Change button. For details see the manual. The relevant details are here: https://www.manualslib.com/manual/19306/Bosch-Logixx-9.html?page=22#manual .
I hope this helps.
Cindy Wells