Same Issue!! I am seller on fiverr from last 10 years. I was a Top Rated Seller as well. Two days ago I saw that account level system turned into "Flagged". When I contacted Support firstly one person said that the reason is location inconsistencies when I asked for the details than other support member said that our account was linked with other account.
I was still confused. I added another ticket and requested them to clarify which term specifically was compromised and give us our status back but they closed the application without even replying.
Really Disappointed!!