"Login attempt with invalid auth" from MY PHONE

Hi, I have repeated “Login attempt or request with invalid authentication” from my own iPhone that runs the official HA companion app. I use it every day and it’s authenticated and working properly.

Logger: homeassistant.components.http.ban
Source: components/http/ban.py:124 
Integration: HTTP 
First occurred: 08:13:02 (1 occurrences) 
Last logged: 08:13:02

Login attempt or request with invalid authentication from 192.168.0.203 (192.168.0.203). (Mozilla/5.0 (iPhone; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Home Assistant/2021.8 (io.robbie.HomeAssistant; build:2021.216; iOS 15.0.0) Mobile/HomeAssistant, like Safari)

I connect directly to the HA host via wifi, no proxy, no VPN.

What gives and how can I stop this? Thanks.