Newest Office Update 16.0.10730.20088 cause problems with Outlook CRM Adddin. 

CRM Footer on messages, appointment etc and also CRM Fields became blank.

Resolution:

Outlook > File > Options

then in General Tab > Mark 'Optimize for compatibility' 

Restart Outlook (twice : ) )

For me one restart was not enough, after next restart everything start to work properly. 

Enjoy.