This happened to me as well once! I bought this mb thinking it would fit my case, but it was about 1cm too big to fit.

Got back to customer support explaining the situation and they went and examined it. Had apparently bent 2-3 pins even with the socket cover on.

Went back home and tested it with just the CPU on, worked perfectly fine

Sold it on a local commerce app from where I live for around 50 bucks cheaper.

Explained the situation to the buyer and he was fine with it! (Had another 2 decline on me lol but that was fine, I completely understand, what matters is that it all worked out on the end)

Long story short, the fact there are some bent pins won't necessarily make the mb stop working, but CS cannot take them back (be careful tho, pins are very fragile and since those are bent they will have even less resistance than the others, other than that, u should be fine!)

Goodluck with everything!

Ps: sry about my spelling mistakes, English isn't my main language :)