Hi @Roberto37255368ecdy,
Hope you are doing well. Sorry for your experience with Acrobat's subscription.
This error is generally shown when Apple does not share a confirmation of your purchase going through.
This is a server side issue from Apple not confirming your subscription rather than Acrobat having anything to do.
If you still experience the same issue, I suggest reaching out to Apple support to check the anomalies and then try again.
Hope this clarifies your question.