DS PPS 2017 cannot be installed x32 bit error

When I try to install the new DS2017 pipeline server it show the following message :
./sciinstall: 53: ./sciinstall: declare: not found
./sciinstall: 54: ./sciinstall: declare: not found
Install the  BIOVIA Pipeline Pilot Server 2017 on the following
./sciinstall: 373: [: x86_64: unexpected operator
IMPORTANT!
It appears that you are attempting to install 64-bit version server on a 32-bit system.
Exiting installation.

I am working on Linux Ubuntu x64bit (Zorin11) (I know that it is not supported but DS2016 used to work just fine on it), any ideas ?