Hi Andrea, I have a few questions to help debug further…
1. Are they being redirected to the homepage of your site or a specific other front-end page or is it taking them to a WooCommerce page in your admin?
2. When are they being redirected? Right after logging in or at a different time?
Could you also provide me with your “System Information” which you can find in your admin under Sign-up Sheets > Help, then just copy and paste the System Information found in the black box on that page. You can send it by including it in a reply to this thread and just check the “set as private reply” box to make sure its only visible Fetch Designs support.