Cannot link Umbrella to my MX-67

[KRAT0S]

The MX-67 firmware is up to date, version MX 18.104.
I got to Umbrella and give access to all the scope, as well as read/write privileges.

On the Meraki dashboard, there was an error in contacting Cisco Umbrella:

• Umbrella API Error. Code: 301

How do I resolve this?

[alemabrahao]

It's a beta firmware, try with a stable firmware.