I though I had the upgraded plan for storage and I have been paying $9.99 monthly. Suddenly, it looks like I am back to the free basic plan. What happened? I did not cancel my plan.

Hi jeanmarcfontaine,

Was a payment method for your Apple ID recently updated or changed? If so that may have caused an interruption in service. However, for help with checking and upgrading your current plan use the steps below found in the article here: Upgrade to iCloud+ - Apple Support

"How to upgrade on your Mac

1. Choose Apple menu  > System Settings or System Preferences.
2. Click Apple ID.
3. Click iCloud.
4. Click Manage. Or scroll down and tap Upgrade to iCloud+.
5. Click Change Storage Plan or Buy More Storage, and choose a plan.
6. Click Next and enter your Apple ID password."

You can also view and correct any payment methods used with your Apple ID with the help of the article here: Add a payment method to your Apple ID - Apple Support

View pricing for your region in the article you started from: iCloud+ plans and pricing - Apple Support

If you have further questions about your account, connect with Apple directly.

Get Support

Best.