Also signing a message from an older Bitcoin address is much more better like this address 14Ff7YBLb4N5QTdE596e8zpFgZeZfLvcgZ
If I am not mistaken that address belongs to the online wallet blockchain.com, formerly blockchain.info, so I cannot provide a signature for it.
However I think I can provide a signature from an address that is older than the one I provided already.
I am looking into it.
You first used the Bech32 address bc1qc7k8... nearly four years ago, and it appears you've consistently used it for DCA-ing since then. Given this history and the absence of previous account issues, I believe it's reasonable to assume you still control this address. So, I think there's no need to sign an older one.
By the way, congrats on finally consolidating those inputs! It was about time, right? You could've saved a few bucks if you'd done it earlier, but hey, better late than never.