Fix Installation on migrated website - PHP Jabber Event Calendar

The site is being moved to a new server - for now it has a testing URL. We need the booking pages to work which are driven by [login to view URL] When moving hosts, we have to install a new copy of [login to view URL] to the new host then import the old database. I need someone familar with php jabber event booking to re-install the sotware on the test server - and then in a weeks time repeat on the new live server. See attached instructions from support. I do not have any more files or installation files - just a complete copy of the website and database.