Hello,
This would only happen if you have entered a different username/password in your coin adapter than in your wallet.
There are two ways you can set a username and password in a bitcoin-like wallet, these are
1. rpcuser and rpcpassword, and
2. rpcauth
Make sure that you are using only one or the other type.
Then go to your adapter settings and check that you have entered the same values in the “user” and “password” fields.
Please let me know if you encounter more problems.
kind regards
Alex