The message “You need to be signed up for an eligible monthly plan or annual plan to use the following materials.” displays and I cannot use the monthly usage plan bonus materials.

To be able to use the materials, make sure that you are using them on the device registered to your Clip Studio Paint monthly usage plan (billed monthly or annually).

See here for more details about monthly usage plans.
To purchase/acquire GOLD or CLIPPY after acquiring award materials, please click here.

Authenticating your license

Refer below for authentication instructions for your device.

There is a limit to the number of times a license can be authenticated.
You cannot repeatedly switch between multiple devices on a Single-device plan. Please apply for a plan that matches the number of devices you wish to use.

Which plan am I signed up for?

You can check which plan you are signed up for and its details via Manage Plans.

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