Was there ANY mention of the fact "You have to Upgrade your Browser" in the last 3 months?
They probably said something like that but didn't spell out the total loss of service
In the UK I understand John Lewis are dropping email service in June after years of providing a decent basic option - but they have given 3 months notice
As Jhieminga says people don't support old systems - my mobile phone (2016) Android hasn't upgraded the OS since 2021 and I'm seeing a slow decline in accessibility on several Aps etc