12 month Photography Plan activated, but no access to Lightroom or Photoshop

In April I activated a 12 month photography plan 20GB code that I bought from Amazon in Black Friday sales last year. The code was accepted and on the Account Management plan the plan was displayed, but on Creative Cloud on my PC plus on Lightroom apps on PC, iOS, iPadOS, and even the web browser version don't show the subscription and show prompts to resubscribe. Some other parts of Adobe's website also showed me as a free user and contained prompts to resubscribe.

I tried uninstalling and reinstalling everything including with Adobe customer service remote accessing my PC and clean reinstalling using CCCX, but it seems clear it's an accounts issue due to the errors on the website as well. My next subscription payment price, which wasn't for 12 months, also showed as only £6 which hasn't been the monthly cost for a long time (would've been great value if it actually worked).

Three weeks ago Adobe promised to send a new redemption code which would solve the issue, but couldn't do so immediately because the "backend team" needed to generate it, but instead they've just deleted the broken plan and sent me nothing. Is this kind of wait for Adobe support normal?