A "support access invitation error" means your invitation to grant access in Google Ads failed. This is a Google Ads system issue, not directly from ClickSambo.
Common Reasons & Solutions:
Incorrect Email: Double-check the email address you invited is exact.
Too Many Pending Invitations: In Google Ads (Tools & settings > Account access and security > Managers/Users tab), decline any old, unaccepted invitations.
Insufficient Permissions: Ensure the Google Ads user sending the invitation has "Admin" access level.
Google Ads Glitch: Sometimes, it's a temporary issue. Try again later.
How to Send/Resend Invitation (Google Ads):
Tools & settings (wrench icon) > Account access and security > Users tab > Click + button > Enter email > Select access level (e.g., Admin) > Send Invitation.
If the error persists, contact Google Ads Support directly, or inform ClickSambo Support for further guidance.