What disable and activate a repo actually doing ?
(beside webhook management)
When you activate your repository, Drone automatically adds webhooks to your version control system (e.g. GitHub).
Webhooks are used to trigger pipeline executions. When you push code to your repository, open a pull request, or create a tag, your version control system will automatically send a webhook to Drone which will in turn trigger pipeline execution.
As mentioned in doc:
Getting Started.
Let us know more details around the issue you faced so that we can review and suggest accordingly.
Regards,
Harness Support