i seen the technical specifications of your main model , few models with supported processors can be added upto 16GB ( 8gb +8gb)
and low end models can be added 8GB ( 4GB +4GB ).
also M.2 ssd does not support , model numbers are not specified in the website .
moreover Crucial upgrade scan tool scans by uisng main model only.
Take to the nearest asus service center ,, request him to open , see the M.2 Slot is there or not, without opening we cant say