You can check your current plan in the Pastela app or on the website (Pastela Cloud).

Checking in the app
Checking on the website (Pastela Cloud)

Checking in the app

Open the Pastela app and go to Settings > Plan settings.
*If you made the payment through in-app purchases, make sure you are signed in with the Apple Account used for the purchase.
*If you made the payment via the website (Pastela Cloud), make sure you are logged into the Pastela app with the Pastela (pixiv) account used for the purchase.

Checking on the website (Pastela Cloud)

Open the website (Pastela Cloud) and go to the Settings page.
*When opening the page, make sure to log in with the Pastela (pixiv) account you are using for Pastela Plus.
*In-app purchases tied to a different Pastela account cannot be viewed on the website.