@nc50lc -Thanks for your answer.
Yes, you can decrypt the file to get an unencrypted 'wallet.json' file to view the contents in readable format.
Already did that, that's another proof that my password is correct, even though when I try to use it in the site I get the "Cannot decrypt wallet, wrong password" message.
But what can I do with that file? Can I use it to transfer the wallet to another one?
Importing it to that link (the correct link) will create a new wallet with different Wallet ID and other credentials, but the keys from your imported wallet.aes.json will be added there in a separate wallet.
Better use it only if you have no other options.
I don't understand what it means - will I end up with two wallets, one inside the other? And yes, I didn't copy-paste the right address, it is
https://login.blockchain.com/wallet/import-wallet