Refund

check your account, https://account.adobe.com

does it show a subscription or payment problem?

You may get a refund if you cancel and are charged during the first 14 days of starting a trial

After 14 days the trial becomes a subscription and there is no refund

This is a public forum, not Adobe support... other users can't help
To Cancel https://helpx.adobe.com/manage-account/using/cancel-subscription.html
https://community.adobe.com/t5/account-payment-plan-discussions/unable-to-load-data-error-while-cancelling-adobe-subscription/td-p/15527182
The Opera browser is not compatible with Adobe - and a refund will take up to 14 days
https://helpx.adobe.com/manage-account/using/cancel-subscription.html?promoid=61PM7X11&mv=other
-be sure to keep the verification email you will receive when you cancel