Hi all. OK so, I was flying my qualifying cross country nav flight a couple weeks ago. I was receiving flight following from Miami Center. I was at around 3000ft. Then because of some low cloud I had to descend to below 2000ft to maintain VMC. The Miami Center controller advised me that I was getting a bit low, and asked me if I could maintain a higher altitude. I told him that for the time being I couldn't - because of the cloud. So, he wasn't all too happy I think but nevertheless I was still receiving FF.
Then, on my second leg, I asked for flight following again. They said I was too low to be picked up by the radar and that I would have to be at around 2500ft... This confuses me slightly because I was well bellow 2500ft on parts of my first leg and still visible on radar.
Any thoughts???
Thanks!