Interface unresponsive

Hi,

I have just installed Suitecrm to test out features in comparison to oDoo.

Install went fine, no problems at all, which was nice.

I loaded the demo data, started creating some invoices etc. but I am finding that parts of the interface are becoming unresponsive, I try to pick for example ‘email invoic’ from the menu and nothing happens. Menu items seem to selectively become unresponsive, but another menu item in the same menu works.

I am guessing this is not normal behaviour.

I am using safari to connect as admin, the install is on centos running php7.1

Any thoughts much appreciate,

Mike