Message from Paypal concerning integration

Hi,

Few days ago, I received 2 mails from Paypal which tells me that “my integration has to be updated”, below what I received (sorry, in french):

“Votre intégration PayPal doit être mise à jour.

Vous utilisez une ancienne intégration PayPal. Effectuez la mise à jour pour proposer le Paiement en 4X1, des modes de paiement internationaux, par carte bancaire, et bénéficier de nos dernières fonctionnalités. Sans frais supplémentaires.
button >>> Mettre à jour”

The second e-mail, received some days later, says the same things:

— New features
— payment 4x
— better security, etc …

I precise that these 2 e-mails are really coming from Paypal.

Several years (maybe 2 years) ago, I set up your plugin using the method described here:
Paypal API setup

Does it mean there is an issue with this parameter ?

Do I have to do something ?

Thanks a lot !
Best regards