Click the "Try for Free" button from the following URL:
https://www.microsoft.com/ja-jp/power-platform/products/power-apps/
On the displayed screen, enter your email address and click the "Start for Free" button.
Then, the attached screen is displayed, and I am unable to sign up.
How can I avoid this error?
The sign-up for the Dynamics 365 trial account has been completed, and I can see PowerApps from the menu, but when I click the button, the same error screen is displayed.
I can access the management screen for other services like Power Automate.
Lastly, the license associated with the target account is as follows.