My iCloud account is stuck on the verifying screen

Hi rafa244,

Is your iPhone connected to cellular data or a Wi-Fi network when attempting to add the account and verify? If not, connect to a network and test the steps here: Set up iCloud for Mail on all your devices - Apple Support

Specifically the steps for turning Mail on from the settings.

1. "On your iPhone, iPad, or iPod touch, go to Settings > [your name] > iCloud.
2. If you want to send and receive iCloud Mail on your device, turn on iCloud Mail (or Mail)."

If the issue continues, test force closing the Mail app, restarting your iPhone normally and then attempting to add the account again.

Close an app on your iPhone or iPod touch

Restart your iPhone

Add an email account to your iPhone, iPad, or iPod touch

Cheers!

Greetings rafa244,

Welcome to the Apple Support Communities. We see that you have not received a reply to your question yet.

What exactly are you attempting to do with iCloud when this is happening? Which specific software version are you using?

Are you able to replicate this issue? If so, which specific steps to you take to do so?

The more detail you can provide, the better the chances of receiving a reply.

Cheers.