Whatsapp is not opening on my S7 Edge

A

AC Question

Recently, after the updates, i have not been able to open whatsapp.
when i try to, It opens up whatsapp in play store. I have restarted the device and also i cant uninstall it coz it was there out of box.
I have been disabling and enabling the app a couple of times, but could it be the reason?
in play store, it doesnt update nor opens.
(Application info -
STORAGE - 4.00 KB of internal storage)
i have no idea what to do next..you guys gave any suggestions(except factory reset)?