Cant login on Safari iOS, but can with offical app on same phone

Hi All, I have a really strange issue. I have Mac mini, iPhone and iPad. I can login via the offical HA app on all three, and Safari on both the Mac and the iPad - but not the iPhone. I use 1Password and have manually checked the password so I know it’s the same. I have tried using 1Password autofill, cutting and pasting the user and password, all to no go. I can logout and back in on Safari on other devices (again using 1Password and copy paste as well)… but just not the iPhone. I have cleared Safari cache/cookies on the iPhone… and even more bizarre: Downloaded chrome, and it just logged in with no issues.

Is HA blocking the browser logging in or something?

Common issue. Try entering it manually.