Hi,

If you're getting "Unable to connect to server" and can't access products in Odoo, first check if the Odoo server is running and your internet connection is stable. If you're on Odoo.sh or Odoo Online, refresh the page or check status.odoo.com for any outages. Also, clear your browser cache or try Incognito Mode. If the issue is only with products, ensure your user has proper access rights under Settings → Users → Access Rights.

Hope it helps