Can anyone enter with multiple addresses ? I can only add one address, the next ones give an error, wants me to confirm/prove the new address with the first address over and over again.
you first have to enter the new address. then the signing will be done with this one.
Yeah that's what I do, add new address, enter new address and when I sign, it shows signing X (new) address by Y (old address) and gives an error. So in the message the new address appears but the signer is the old address.
Correct, the current version signs with the latest address (the one on the Receive tab).
Unless you are concerned about privacy, you can move your entire balance to the already linked address.