Yes, you may. However, you might not be able to find the Versa app on your Apple App Store or Google Play Store depending on your region settings as the app is only available on the Malaysian store.
While you are overseas, your funds will continue to grow. However, transactions (including cash in and cash out) may be unavailable as you might be unable to receive One Time Passwords (OTPs) due to the following reasons: poor connection and OTPs typically can only be sent to Malaysian phone numbers.