problem with update power bi web app

[drs_acolafati]

Hi, I need help for update my power bi web app.
I already created it but i couldnt update the data set.
My workspace is ok, but when I try to Update App option, shows this mensage:
"The scheduled update is disabled because at least one data source is missing credentials. To start an update again, go to the settings page for this data set and enter credentials for all data sources. Then, reactivate a scheduled update."
I am using the trial license. Am I cant do this with this license?
I appreciate all atention.

[lbendlin]

yes. go ahead and update the dataset credentials as described.

[drs_acolafati]

Hi,
But I can use the getway for automactic update data set, because I am using the trial license.
I need to update manualy.
And shows this mensage when I try to do it.