Save site as template issue in SharePoint online

Try to access ~/_layouts/15/savetmpl.aspx. If the problem still has there change the configuration at SPD

SAML token is invalid

Today we have been facing Office 365 login issues and unable to open SharePoint, CRM and MDM.

MDM Landining Page Custimization

we have customized the branding of the MDM landing page.

References: http://blog.encorebusiness.com/dynamics-marketing-landing-pages/