Hello Waters_Unlimited,
Thank you for using Apple Support Communities and for sharing these details with us. We want to help you get your email account properly working on your iPhone. Allow us to assist by sharing some helpful troubleshooting steps you can try. Let's follow the steps below:
1.) Close out the Mail app: Close an app on your iPhone or iPod touch - Apple Support
2.) Refresh things by restarting your iPhone: Restart your iPhone - Apple Support
3.) Try to add your email account in the Mail app: Add an email account - Apple Support
4.) If your issue continues, make sure you're not using a VPN: Check VPN (Virtual Private Network) and third-party software to help resolve network connectivity issues - Apple Support
5.) Connect to a different reliable Wi-Fi network.
6.) If login options still continue not to populate, try resetting your network settings. Tap Settings > General > Transfer or Reset [device] > Reset > Reset Network Settings. This also resets Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you’ve used before. If you're using iCloud Keychain, these settings are also removed from other signed-in devices.
We hope these steps help you out. Thank you for using Apple Support Communities.Take care.
