Upgraded my storage this morning but message pops up on screen that I don’t have enough storage

Check -> Go to -> Settings -> your name -> iCloud -> if you see 50 GB (or 200 GB ot 2 TB) then you have an iCloud subscription.

If you have an iCloud subscription, you will receive a monthly bill from Apple, check your email box.

You pay monthly for iCloud storage.

The iCloud + subscription will be terminated depending on the start date.

If you start on August 1 and are going to cancel now, the subscription will stop on November 1, a monthly term is used.

If you have upgraded iCloud storage, it would take 1 to 2 business days.

Once your request for iCloud+ has been activated, you should receive an invoice in your email box.

Wait another day or so?

If it takes too long -> Call Apple in your region see: Contact Apple for support and service

Contact Apple for support and service - Apple Support

Or -> Contact Apple Support -> Get Support (apple.com)

You can’t upgrade the storage on your phone; it will never have more storage than it did when you bought it. You probably upgraded your iCloud storage, which is for syncing and backups, but does not add any storage to your phone. See→What's the difference between device storage and iCloud storage?