I have a client account on Upwork, and recently was invited to another organization. I was not able to add this organization to my existing account, so I had to create a new user account with a different email just to be able to join that organization. Is there a way to merge my two accounts?
Unfortunately, there is no option to merge two accounts. However, it's possible to close one account and create a different account type on another account.
From this account that you are posting from, you can create a freelancer account by following the steps noted in the help article that Joanne noted in her reply. You can ask your client to invite this account instead (where you are posting from), and close the other account.
Let me know if you need further assistance.
I'm sorry I misunderstood your post. I initially thought you were hired by the client through Upwork as a freelancer. You may ask the client to add this account instead, so that you can continue working on being a Project Manager for them through this account. Once done, you can close the other account.