Grafana localhost dashboard web login

Hi,

I was using a localhost:3000 Grafana login.

i was using default creds:
admin, admin.

after a few weeks of no use (was ooo for a few weeks), now, the creds do not work.
Now i thought i will re-install and i followed instructions on this.

How do i connect to this Git:

brew install --HEAD grafana/grafana/grafana

I also tried installing from .tar file, extracted it and ran it. it installed fine but again when i go to:
localhost:3000/login

admin
admin

does not work.

what to do?

thanks
Gru

I am having the same exact problem, suggestions?