Webmail not working after office 365 modern authentication started.

Hiya, My adobe reader webmail was working fine until office 365 modern authentication was activated.  we rolled back to basic authntication but still no luck with webmail attaching files and sending to drafts folder.

does adobe reader support modern authentication with Ofice 365 webmail ?

is there an alternative solution with using Ofice 365 exchange with webmail ?

any assistance appreciated.