Use the Tasks tab of Settings to view the status of the task's processing:
your requests for exporting contact lists or messages as CSV files
or opting out of selected contacts.
In case of a large amount of data, the system will add a task here and show its completion status.
Click Tasks in the Settings section of the main menu on the left to view task progress or download files.
When a file is ready for export, the download button in its row becomes active. Click on it and save the file. When done, click Delete to clear the resources.