Well same thing happened to me, i lost my rank as well, i was on front page about 6 month ago but now even i cant find my own gig on search lol.
not a single order from new buyers. facing a really difficult financial situation right now, usually i don't comment posts but i see that you had the same issue as i'm having.
i lost my ranks on last year October, still nothing not a single click / impressions anything. i did updates to my gigs as well. got recently repeated clients reviews as well still no luck.