For those of you with iPhones and iPads, following an Apple update the LinkedIn app has also been updated and the Find Nearby and QR Code features have moved to an almost hidden location.
***Updated November 2019*** Android phones have now been updated and you should find the features in the same place as iPhone users.
To find the features now, tap the My Network tab at the bottom of your screen, then tap the little blue circle on the right hand side. This will open a sub menu which reveals the Find Nearby and the QR Code.
The screenshot below is taken from an iPad. It is similarly placed on iPhones and Android.