Just like OgNasty, I also can't verify your first signature. The message "Wrong signature" appears on Electrum.



There may be an error in your message or signature, e.g. there was an error during the copy-paste process, or characters are missing.
Try to re-create a signed message using the same message and bitcoin address, then check whether the signature that generated is still the same as the previous one or is there something different.