There's a warning printed in the console when you make signoz-ui so I'm guessing this is a known issue:
NOTE: If you plan to redeploy and access SigNoz, clear your browser cookies for http://localhost:33301 to avoid login issues.
I've had the most luck with starting a new browser incognito mode each time I want to look at the Signoz logs.
Is there a way to configure it so that login & cookies aren't needed and the subsequent login doesn't fail (and workarounds like incognito mode aren't needed)?