How to synchronize Google Calendar with Creatio Calendar?

Hello!

I am experiencing an issue regarding the synchronization between Creatio and Google Calendar. My Creatio Version: 8.1.1.3635

I have set up the synchronization between the two platforms, but I am encountering the following problem:

• Changes made to activities in Creatio are not reflected in Google Calendar. Neither the other way around.

I have already tried the following troubleshooting steps:

• I've already followed all the steps the documentation for the Version 8.1 said:

  https://academy.creatio.com/docs/8.x/no-code-customization/base-integrations/google-mail-contacts-and-calendar/register-creatio-application-in-gsuite

  and here

  https://academy.creatio.com/docs/8.x/no-code-customization/base-integrations/google-mail-contacts-and-calendar/synchronize-contacts-and-activities-with-google#title-194-1
  
  plus this one too: Set up integration with Google services, MS Exchange and MS Office.
  
  
  
  But the config email, doesn't show neither calendar nor contact sync. 

Despite these efforts, the issue persists.

I would be grateful if you could provide any guidance or solutions to resolve this synchronization problem. Please let me know if you require any further information from me :)

Thanks!