After fresh install zextras on Zimbra 8.7.9 all buttons on zextras are greyed
Reinstallin did not help.

[zimbra@dotmail1 ~]$ zxsuite core getLicenseInfo

dateStart 2017-06-01 12:11:29 CEST
dateEnd 2017-07-01 12:11:29 CEST
expired false
type Trial
accountCount 3
resourceCount 4
licensedUsers unlimited
isWithinGraceInterval false
modules
ZxBackup
quantity unlimited
licensed true
ZxMobile
quantity unlimited
licensed true
ZxAdmin
quantity unlimited
licensed true
ZxChat
quantity unlimited
licensed true
ZxPowerstore
quantity unlimited
licensed true
enabledOnNE false
serverID 4607880f-2278-458e-9804-abf31cdeccad
canRemoveChatBrand true