Hello,
By default the ID is visible but HikaShop have some responsive CSS rules which hide some columns for small screens.
The column ID is the first one to be hidden.
You can see to customize the backend CSS if you want to change that.
Or you can also see to remove the zoom in your browser.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.