There are lots of people having slow sales from newbies to TRS. There are also people who are still selling well. Customer Support doesn’t respond on the forum. A staff member did post in May to say that there were tests going on and that there was no definite time period planned.
To overcome it, your best bet right now is to take the slow time to polish your gigs and skills. Besides that, find ways to promote your own gigs outside of Fiverr. It is always a good idea to diversify as well. Relying on one platform as a sole source of income is rarely wise unless you have substantial savings to sustain you through dry periods.
You’ll see lots of posts discussing theories on all of this on the forum, but self promotion, expanding your income sources and developing patience are solid suggestions and not just guesses. Other than that, though, if you want to read all the theories just look around and you’ll find them.