I will add one final note here to help others who wish to play this when the next test is available.
There are two versions of this game in play store - this one is only available in Philippines region and there is another version which is easier to access. The other one is easily available in Canada region as well as a few other countries. To actually download these games from Play Store, you will need two things - a Google account not tied to any payment card or Google wallet and a VPN for the region you want. The reason for account not tied to a payment card is because Google will not allow you to use other country outside the one the card is tied to.
The version available in Canada is actually running a test right now but sadly all 3 open servers are full. I've tried many times to get in but cannot. Certain APK websites have both versions to download but I won't mention names. A simple search on Google will easily find them.