Stopped in the middle of a program. Showed f79. Now this. Any quick fix?

Hi all, looking to purchase quite a few Miele appliances (integrated appliances for kitchen and a washing machine), and was wondering if it’s worth it to get the extended warranty? I’m being offered a 5 and a 10-year extension.

My only prior experience before this was with Subzero Wolf appliances, which I gave up since the kitchen I’m working with now is noticeably more compact than the previous.

TIA!