Sage 50 US Cloud needs extra MS 365 license to just save excel file. And it kept asking for login even though already logged in. Plus some errors for some features in excel on cloud, probably because of lock for cloud security. When you try to move/copy sheets between excel files inside of VM/Cloud, cannot find other file. Anyways this license is basically wasted unless Sage provide this for free. So simple fix will be having csv or excel(xlsx) file export feature from Sage software just like pdf export. If user want to open this file from cloud, they can use their license, that's user's choice at least, instead of make this mandatory for saving as it now. Besides this wasn't a part of advertise that requires extra MS 365 licenses when we purchase Cloud (we migrated from Desktop version).
John Paik
(UPDATE) Finally, this Login issue fixed after a month. Not sure it was only us that when our account set up in the beginning wasn't set up correctly or something. So this is not an issue any more unless it fixed by this request, I don't believe so. Anyways still good to have this feature to avoid whole MS 365 license issue.