Does wamp server support ECDSA certs? Because your older certs were RSA but now you are getting ECDSA certs.
Note the EFF has discontinued support for Certbot on Windows as of Feb 2024. You should be looking at replacing that for a different client. The Certify the Web client is probably easiest to use and has an active support community. See:
If you wish to reorganize your certs into one now would be a good time to change your ACME Client and redo the certs the way you wish.