1 - what do your analytics show? 2 - do you have something like intercom.io installed to message customers based on usage? 3 - call customers who are leaving

1 - what do your analytics show? 2 - do you have something like intercom.io installed to message customers based on usage? 3 - call customers who are leaving and ask why? ask if you can fix it (if valid) and ask if you can offer them something to stay 4 - I hope by re-start you do not mean - you stopped marketing. It should never stop and always evolve.