Hi
Sorry, to be honest I really don't understand your situation. For testing target MCU code you need cross compiler (in this case gcc for ARM) and debug probe, which is able upload output binary into target device. On S32K344 it is integrated PE Micro FX Embedded. I have no experience with S32K358 board.
Can you please describe in more details your HW/SW setup? Which debug probe is present on your EVB? Looks that your Debug probe is recognized by OS, did you select the correct version in S32DS debug configurations?