How to purchase icloud storage plus browser

Hello shdll_,

It is not possible to upgrade iCloud storage via a browser. You have to use a device or a computer as mentioned in the resource we shared previously.

Let us know if you have any other questions.

Take care.

Hello shdll_,

There is no need to purchase the 5 GB plan. The 5 GB plan is the default one that is included with an Apple ID and there is no charge for it.

If you'd like to change to a storage plan larger than the 5 GB plan, like the 50 GB, 200 GB or 2 TB one, you can do so with these steps: Upgrade to iCloud+

Cheers!