Thanks. The private keys.
It also says, 'imported address, watching only' if that's of any help?
I can't remember seeing any 'private key' in the blockchain wallet? Just the address.
These messages are showing that you don't appear to have what you think you have (ie. private keys)... It seems that all you have are addresses.
If you don't have the private keys, you won't be able to spend any of the coins.
Your addresses will look something like:
1xBitcoinAddress
or
3xBitcoinAddress
or
bc1qBitcoinAddress
ie. they'll start with a 1, 3 or bc1... Your BitcoinCash address
might start with a "bitcoincash:" prefix.
Whereas your private keys in WIF format will look something like
5KCYdMUyh8hBHxw8mmcZeK4tzSLQEhryP6ppcFRRE4ioKFb8bYW
or
KxCY5wByvumhAa2E6cyTuuTUUXq4xNvTR4vcx9G5UgsB9aKsxvZD
or
L3KxbTQVE8xLRsswJbuy5gkCUWpdZVMZrYi58aemvfRVRCq5MTAi
ie. they'll start with a 5, K or L.
If you want to
spend coins, you'll need to import the private keys... importing the address will create, as you've discovered, a "Watching-only" wallet which only allows you to view the transaction history and balance etc... but you can't sign transactions (you don't have the private keys!).
Do as mentioned above and get either the 12 word recovery phrase from blockchain.com wallet... or if the addresses you're trying to export were originally "imported" to blockchain.com, then you will need to click the gear icon in the top right corner and select "wallets and addresses":
That should give you options to view "imported" addresses in blockchain.com and if you select "manage" to the right of those addresses, you should get the option to view the private keys:
NOTE: you cannot see the individual private keys for addresses in your blockchain.com wallet that are part of the HD wallet (ie. generated from the 12 word recovery phrase), without using the 12 word recovery phrase and external tools. You can only see the individual private keys for imported addresses.