Why am I not receiving emails in icloud

Hey 1Phoenix4me,

We'll be happy to help with receiving email in iCloud. Are you able to send email without an issue? Is the issue only with receiving? This can help us isolate the issue. Also go through the steps here as they often resolve iCloud Mail issues: If iCloud Mail isn't working - Apple Support

Keep us updated!

Thank you for the reply 1Phoenix4me!

You can upgrade your iCloud storage by following the actions here:

Upgrade to iCloud+ - Apple Support

You can use different devices to upgrade your iCloud plan. Also, you can update your payment method using other devices as well as online:

Add a payment method to your Apple ID - Apple Support

If you can't add a payment method, make sure that the payment method is accepted in your country or region.

Keep us posted.