ceelippens
Hi
Ad Agency is a premium product. As per support policy user must have an active membership to get support for the premium products.
I can not see any membership active on your profile. Can you report the issue with active membership account, If the membership is expired i suggest you to re-subscribe for the memberships.
About the issue did you checked the Vina slider support team on this, as the Agency ads does not make any change on other extensions. It might changes need in the slider extension if it using same script.
Regards