Thank you for posting, @Whimsical_imagination44f9, and thanks to @creative explorer for the helpful information!
I apologize for any confusion you encountered during the signup process.
I reviewed your account and can confirm that there were two subscriptions associated with it: Adobe Acrobat Pro and AI Assistant for Acrobat. Both subscriptions were canceled on September 12, and there are currently no active subscriptions on the account.
Based on the account status, you do not need to worry about a hidden trial that is still running. If a separate trial had been successfully activated, it would normally be tied to an Adobe account and appear in your plans.
You can verify your current subscription status here:
https://account.adobe.com/plans
I understand why receiving only one confirmation email would be concerning, but the account information indicates that both subscriptions have already been canceled.
Please let us know if you have any additional questions, @Whimsical_imagination44f9.