Maybe my memory is inaccurate, but I remember seeing LinkedIn and Twitter somewhere in this list:
Anyone got any clues as to why this might be?
Unfortunately, there is no longer the option to connect your LinkedIn account to your Upwork account. You can include a link in your proposals, cover letters or interview stage, but please do review these tips and resources in order to work safely and in line with Upwork ToS, and make sure that all the payments are made on Upwork between you and the client you met on Upwork!
We'll have one of our agents get in touch with you regarding linking your Twitter account on your Upwork account!