Hi Alvarrie:

That message was not promotional. Its purpose was to inform you of the changes outlined in the message. Please take another look and let us know if you have specific questions about any of it.

Thanks!

I am new to this and I am unsure how to proceed to make the necessary changes. Could you assist me here. Where and how to make the changes? I tried to contact Google Cloud Support for further assistance and waiting to hear back meanwhile using the help of Google community.

Could you elaborate on which part you're unsure about?

In the meantime I would recommend you start with migrating your key if you want to take immediate action. Instructions here: https://cloud.google.com/recaptcha/docs/migrate-recaptcha

But as mentioned in the email we will do the migration for you later this year if you opt not to take any action now.