Let me first say about myself. I am B Tech, PGDM with 25 years exp. in marketing and 9 years in digital marketing.
I my Adwords qualified and HubSpot Inbound Marketing certified.
I have consulted on SEO & SMM for many clients.
I registered on Upwork years ago, and gave up.
Last month I logged in again, and submitted less than 10 proposals.
Within 3 weeks my account was suspended based on "the fact that you have submitted a high number of proposals for jobs on our site without many contracts or earnings. Unfortunately, this means the jobs posted by clients are not a good match for your skills."
Less than 10 proposals in 1 month and I get suspended!
I appealed attaching my Adwords Search qualified and HubSpot Inbound Marketing certificates.
I offered to send my IIM PGDM and experience certificates.
Within 4 hours on a Sunday I get a reply that my account would remain suspended.
You may draw your own conclusions.
Hope you have better experience on Upwork or other platforms.