I open an email and its contain dissappear. I create an email and press enter and what I have written dissappear.
Seems like you have an Outlook bug. A Microsoft Outlook update released today for the desktop client introduced bugs that prevent users from creating or viewing mail. https://www.bleepingcomputer.com/news/microsoft/microsoft-outlook-bug-prevents-viewing-or-creating-email-worldwide/
Problem solved. Thanks Unhackme.
You are welcome!