Colabora online app packages for office word excel and powerpoint not working properly for nc 15 version

Good Morning NC clouders good to meet with you once again on this platform to intimate ourselves of current happenings of NC.
There is a challenge that am having presently with NC collabora online app, i installed NC perfectly via the setup file but my collabora online app packages such as msword, excel and powerpoint are not working very well. You guys can check it out yourself from here

Secondly, the IMAP mail settings for google still not working for me except for the PHPsend mail that is ok and i really need IMAP mail to work plkease can any fellow help me out or respond and i will release my backend login for my NC asap.