core: Nexia integration no longer functions

The problem

The Nexia integration no longer functions after its consolidation with American standard. Authentication results in 401 errors.

What is version of Home Assistant Core has the issue?

Home Assistant 2021.5.5

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant Container

Integration causing the issue

Nexia

Link to integration documentation on our website

https://www.home-assistant.io/integrations/nexia

Example YAML snippet

No response

Anything in the logs that might be useful for us?

Logger: homeassistant.components.nexia
Source: components/nexia/__init__.py:50 
Integration: Nexia (documentation, issues) 
First occurred: 7:43:22 PM (1 occurrences) 
Last logged: 7:43:22 PM

Access error from Nexia service, please check credentials: 401 Client Error: Unauthorized for url: https://www.mynexia.com/mobile/accounts/sign_in

Additional information

URL has moved.