Configuration.yaml... can there be multiple trusted proxy IPs?

Please ensure your code snippets show correct indentation. The code you’d pasted above will not work with that indentation.

Also note there is no need to conceal private IP addresses. My HA host is 192.168.1.7, for example.

Why the leading zeros in the IP addresses? Try:

trusted_proxies:
  - 192.168.xx.1
  - 192.168.xx.2

This is one of my most popular posts, so I’d suggest the multiple address thing works: