When you change your target or source endpoint settings in Qlik Replicate, the new settings will not take effect until the tasks using them are stopped and resumed. Below are the recommended steps:
(Step 1)
Edit your endpoint settings, then select "Save".
(Step 2) Stop all tasks that use this endpoint.
(Step 3) Once the task is stopped, simply select "Resume Processing".
The task should now be using the latest settings.