Our business had several aliases configured, today I tried to add a new alias but the option doesn´t show anymore https://support.office.com/en-us/article/add-another-email-alias-for-a-user-0b0bd900-68b1-4bf5-808b-5d240a7739f4
This is what I see now:
This is what it looked before:
Now I can only change the user name but cannot add an alias, then I tried to use one of the alias I had set up and is not working anymore. I ran the administrator audit log and the last change showed there is an alias I set on January 24.
I don´t know when they were deleted or why and why I cannot add any alias now. We are losing business as the aliases are sales and service info related.