Getting “bad user name or password”, however have no issue logging in to Tidal via the Tidal client app using very same login credentials. Tried restarting Roon Core, as was recommended in one of the related posts - it did not help.
Core is running on Synology NAS, Roon client on Mac Mojave 10.14.5. Both ver 1.6, build 416, 64 bit.