Sorry, no forum here... unless some other Portfolio user see this and has an answer See Employee Dave's reply in this link of information "Portfolio team asked us to close up shop here" -https://community.adobe.com/t5/download-install/is-portfolio-still-being-developed/td-p/11583268?page=1
======== While Adobe Portfolio does not have its own community forum, most PF users find help in LR, LR Classic or Creative Cloud Services. And there is a rather extensive FAQ & Knowledgebase as well as a dedicated Portfolio Support team to assist users with technical matters. Portfolio on Adobe UserVoice is for posting feedback and feature requests. See links below.