This seems succeed in attempting to connect, which is good. However, it looks like in the meantime you may have updated your Windows 11 to the 24H2 update. This introduced changes to network authentication with SMB: by default, it is not possible anymore to connect anonymously with guest/guest, which is why it now pops up a password dialog.
However, at this time, ROCK continues to use guest/guest, so you need to reenable this in your Windows client. Microsoft explains this here:
Note: The steps 1-5 of this solution are for NAS where you can create a log-in account with authentication by username and password. You can’t do that on ROCK, and therefore the solution for this starts at step 6 (re-allow guest/guest log-in on the Windows client)