I have been on the platform for several years now and at some point I was a paying user. My expertise is in SEO and as you can imagine competition is high and there are a lot of so called "experts" that charge low rates and most of them land the jobs. In the first years I was charging also relatively low rates, but as my expertise and experience grew, I increased my rate, but at the same time considerably lowered the chances of getting projects easily.
What did upwork do? Probably after applying to 20-25 jobs in about 2 months, I get an email saying that my account has been removed because I had no contracts gained and that my skills are not required by their clients. No warning, no nothing (while 7 jobs where still active and I had proposals sent and waiting for replies).
Anyway - I will be looking into other platforms that are not flooded by low quality freelancers that don't care about quality of work and can afford to charge lower rates since they don't care about making a business connection with their clients.