Quote from: Martin958 on Today at 02:24:41 PM

-----BEGIN BITCOIN SIGNED MESSAGE-----
Date: 10/05/2021
This is the real owner of the bitcointalk account :Martin958
My bitcointalk profile is: https://bitcointalk.org/index.php?action=profile;u=314728
-----BEGIN SIGNATURE-----
bc1q5x06na8urh3f9sx6j8d9js00zrltsn4uzp5r6r
H2c46zCwwE0ujWlCuA5k0TKZcOCdGpq8TAiEEpJVykXKWVmBD+g1F057ONiogY0KRTgW9JCqpULvwq11uOHdPQg=
-----END BITCOIN SIGNED MESSAGE-----

I am still not able to verify your signed message "Message failed to verify!"
Maybe there is some space or double quote that you have lost by mistake? Which wallet are you using for signing this message?