Please provide your experiences.  Here is just one of mine:

Research Gate staff: your website is so dysfunctional in so many ways. One way just occurred, when your system asked me to upload several of my articles; but while I was in the process, your system timed me out! When I clicked to get back to the list of articles that need uploading, your system took me to this screen, where there are no choices and no ways to get back to the list that I can see. Nor any ways to reach staff for help. Donald Light PS You also have TWO accounts in my name with different ratings and statistics. Why? I've written before to combine them -- there's only one me. But again no reply or help.