Auto Join/Sign in not available

luke_photograph,

As you happen to still be experiencing issues we would advise reaching out to Apple Support for a deeper investigation. This link can help with starting the support request to get in touch: Apple Support

You may also try checking for any profiles or Mobile Device Management, which may affect some functionality. These can be found in Settings > General > VPN & Device Management.

Cheers.

Hi luke_photograph,

We'll be glad to help out with your Wi-Fi issue. Generally, you should be able to select "Auto-Join" as outlined here:

"If you can’t automatically join a network

Your iPhone and iPad can remember network and login information so that you can automatically reconnect to that network when you're in range.

If your device doesn't automatically join a captive Wi-Fi network:

1. Tap Settings > Wi-Fi.
2. Tap the More Info button  next to the network name.
3. Make sure that Auto-Join is on.

If you don't want to connect automatically, turn off Auto-Join. To see the Welcome screen the next time that you connect to the network, turn off Auto-Login.

"

Use captive Wi-Fi networks on your iPhone or iPad

Since yours doesn't show there, we'd recommend reaching out to Apple to look into this with you further and resolve your issue: Get Support

Cheers.