I tried to create an account successfully and signed in, but the apps still show a warning that I cannot save the file because I have not signed in. After re-trying to sign in again, still fail. It is discouraging me to use it.

如果你是Ms Windows用家，而對文件上的字型有要求，你就不應使用IPad、iPhone和Cloud版本的Office，因為你在Windows中的Word做了一份很精美的文件，在iPad等裝置開啟會無晒字型，然後內容的位置會亂晒，當你在iPad上改好所有，返到Windows上的Word又再全部亂晒。我尋找過方法，AppStore是有可以安裝字型的App，但你好大機會找不到同時出現在iOS和Windows的字型，因此，以上問題不能解決。希望Microsoft可以學習Adobe，將使用了的字型儲存在文件中，真正讓檔案在Windows、iPad、iPhone和雲端四邊可編輯。If you are Ms Windows user and want to create a document with special font, you should not buy Ms Office for iPad, iPhone and Cloud. It is because special font in a Word document created in Windows cannot correctly display in iOS devices and Cloud. Then, it leads to formatting problem in the whole document. You encounter the same issue in Windows Word after you fix the problem in iOS Word or Cloud Word. Although there is app on AppStore that can install system font on iOS, it is not work because you never find a font that can be used on both iOS and Windows simultaneously. I really hope Microsoft can learn from Adobe to embed all used fonts in document to solve the problem.

The app theoretically support PDF export in two ways. One is the Send a Copy option. But both email with Outlook (Microsoft's own app) and Send with Another App got error with PDF format. The PDF sent is corrupted. The another way is to Export the file. There is an option to export to iPhone, which is useless as this means the Word app storage in your iPhone, not accessible with other apps, not even within the Word app. I can export to OneDrive where I have to open my OneDrive app for further sharing. There is also an option to export to More locations where you may find Google Drive but it is again useless. The file exported is 0KB...The only viable option is to Print the file to another app, this will generate a PDF but this is so counterintuitive as all other explicit options to generate PDF don't work but print without a printer works...

After the iOS 11 update, I noticed that it doesn’t allow me to share files I edited or authored directly to Facebook Messenger anymore. It ALWAYS tells me to check my connection even if my internet connection is perfectly fine. When I send a document saved on my iPad (in the MS Word app) via Outlook, the paste option (CMD+V) option doesn’t work. I had to save my email first as a draft, close the app and open Outlook again for the paste function to work.It doesn’t also support Google Drive as a cloud storage option even if Google Drive can be theoretically selected as a cloud storage, but once selected, it just goes back to asking you where you want to save the document. I don’t know whether it happens with other cloud storage options since I only have Google Drive subscription.These never happened before the iOS 11 update. Document sharing and sending via other apps were all seamless prior to the update. I hope these can be fixed soon.