you also have to set your agent to use you partner credentials
simply do a :
clearml-agent init
and paste your partner's credentials

you can run a clearml agent on your machine, in a way that it is dedicated to a certain queue. You can then clone the experiment you are interested in (either bleonging to your workspace or to the one from you partner), and enqueue it on into the queue you assigned your worker to.
clearml-agent daemon --queue 'my_queue'

thanks! I got it myself already)) yeah, the problem was I did not make new credentials. After I created it for this workspace I managed to run the task