16.0.1 LTM OVA Login

Hi folks,

Apologies for the simple question.

I've downloaded the BIG-IP LTM 16.0.1-0.0.3 ova and installed it on ESXi 7. It's there no problems, I can log into the cli with root/default, give it a management address that I can browse to, but I can't log into the gui with admin/admin.

I've tried resetting the admin password with

tmsh modify auth user admin prompt-for-password

and

save sys config

but I still can't log in and get auth failed in the secure log.

What am I missing?!?

Best, Leigh