If it was to be sure caused by submitting the sitemap, its too late for you to concern about it. My vote, another chance. Ive actually experienced this twice and I got my rankings back by analyzing where i went wrong with the tech/structure.
With an alexa like that, you probably have a big site. Try to find a "main" problem and fix that first rather than going for different changes all at one time.
Last edited by efusionworld; 11-30-2017 at 11:44 AM..