Hope you are doing well. Sorry for your experience with Acrobat Reader Mobile.
Thank you for sharing the details. I checked your account, and the subscription does not reflect on our backend.
I will be forwarding the details to the team for further investigation. While I do so and get back to you with a response, please try the given steps once:
1. Open Acrobat Reader Mobile;
2. Open profile-> check the email address to see if it is the same as the one you purchased,
3. Log out of the application-> try using the option to sign in with Google.