Appian - Sharepoint Online (Cloud) integration

am trying to integrate Appian with Sharepoint Online (Cloud) - Office 365.
I make use of Sharepoint Connector, but it seems that something goes wrong with the Authentication. I am following the instructions as noted on the product documentation (e.g. use third party credentials - Username, Password, Domain) and i get "UnauthorizedAccessException".
Is there anyone that overcame this issue (without a custom smart service implementation)?

*To mention that for a local sharepoint installation the connection is successful !

OriginalPostID-248086

  Discussion posts and replies are publicly visible