I found the below messege in Upwork Terms and Policiy page:
" IF UPWORK DECIDES TO SUSPEND OR CLOSE YOUR ACCOUNT, UPWORK HAS THE RIGHT BUT NOT THE OBLIGATION TO: (A) NOTIFY OTHER USERS THAT HAVE ENTERED INTO SERVICE CONTRACTS WITH YOU TO INFORM THEM OF YOUR SUSPENDED OR CLOSED ACCOUNT STATUS, AND (B) PROVIDE THOSE USERS WITH A SUMMARY OF THE REASONS FOR YOUR ACCOUNT SUSPENSION OR CLOSURE. "
20.1 ENFORCEMENT OF AGREEMENT
Upwork has the right, but not the obligation, to suspend or revoke your access to the Site and Site Services if we believe that you have violated or acted inconsistently with the letter or spirit of this Agreement or the Terms of Service or violated our rights or those of another party. Without limiting Upwork’s other rights or remedies, we may suspend or close your Account, use self-help in connection with our rights to reclaim funds, and refuse to provide any further access to the Site or the Services to you if (a) you breach any terms and conditions of this Agreement or other Terms of Service; (b) we are unable to verify or authenticate any information you provide to us; or (c) we believe that your actions may cause legal liability for you, other Users, or Upwork.
But If Upwork suspend your profile, Upwork may provide you details about the reason of suspensions, also you are free to contact with upwork live support to know the real reason...
Thank you All here