Which MacOS version you are on? If you upgraded to Sonoma you may experience issues as it is not approved for rekordbox yet.
Rekordbox 6.7.6 Tidal Issue
i have upgrade 6.7.5 to 6.7.6 on Mac Os.
when I try to access Tidal(i push LOG IN), the system freezes and I can no longer do anything other than force quitting rekordbox and reopening it. This didn't happen to me with the previous version.
Ventura, i don't update to Sonoma
Can you please file an inquiry ticket here and our support team will gather some additional information to assist you in resolving this issue.