u/Calx98

Hi guys, I hope this is okay to post here for advice! My mother in law asked me to replace her key fob (2015 i30) and I ordered one online. Swapping it over all went well, except the two pieces I’ve circled, on the circuit board, have come off. The top one is the tactile button for unlocking the car, but I have no idea what the little R25 is for.
I was hoping you guys might have some advice on the best thing to do here: should I just buy a replacement board, or do I try to solder these two back on? And if it’s the latter, I would love any tips

Thanks in advance sorry I’m a noob