2026.6 does not connect from ipad air 2 (ipad5,3)

My HA display is a wall-mounted ipad air 2 (ipad5,3) which have been running fine for some years. After update to 2026.6 this ipad is not able to connect to the server. I also tried 2026.6.1. Same result. It is the same response as if the network is down ("unable to connect" I think it says). My other devices connect fine and there is no issues with the server. I have had to revert to 2026.5.4 by now.

Is there some new requirements in 2026.6 that this ipad does not meet? Any other tips?

I´m running HAOS supervised on an old desktop running linux with virtman for the OS.