Unable to complete checkout due to a persistent "We couldn't process your payment" error, despite using multiple valid payment methods and devices.

I’ve been trying to purchase a subscription since July 2nd, but I am completely stuck at checkout. I keep receiving this exact error: "We couldn't process your payment. Please check your payment details. If the issue persists, try another payment method or contact your bank."

I know the standard advice is to contact the bank, but I have already done that and much more. Here is the exhaustive list of troubleshooting steps I have already taken:

• Bank Verification: Confirmed with my bank that international online transactions are 100% enabled and there are no blocks on my end.

• New Accounts & Cards: Tried multiple active cards. I even went to the bank, opened a completely new account, and got a brand-new card just for this. It still failed.

• Alternative Methods: Tried different devices, different networks (Wi-Fi/Cellular), and even different email addresses. I also tried purchasing the 1-year prepaid plan instead of the monthly plan.

• Support Agent Failure: I contacted Adobe Support. The agent sent me a secure link to enter my card details so they could process it on their end. Even the agent couldn't get the payment to go through.

• I was told to wait 24 hours for a resolution, but it has been over 3 days with no updates and the issue is still there. 

  Since this fails across multiple legitimate cards, new bank accounts, different networks, and even fails when Adobe agents try to process it manually, this seems to be a backend system block or bug on Adobe's side.

  Has anyone else experienced this exact situation recently? Is there a specific way to escalate this past standard tier-1 support so a billing engineer can remove whatever block is on my profile/region?

  Thank you in advance for any advice!