From what I remember is that there is really a clause in the terms of service about gambling even a while back. Coins.ph is not for gambling purposes as their Terms of service already stipulated that part and being a KYC platform, of course they have the right as mandated by the Bangko Sentral, that users of coins.ph needs to submit their identity. When I used coins.ph before I remember getting flagged by them for sending BTC to an exchange. After that I stopped using it being fed up with the rules. If you are going to use coins.ph, then just use it for investing into Bitcoin without moving them to different wallets.
It was already posted in the OP.
you may refer to the complete terms of services of coins.ph.
https://site.coins.ph/user-agreementProhibited Uses include transactions or activities related to:
(c) Gambling: Online gambling, lotteries, casinos and informal gambling, gaming operations, sports betting, and other games of chance and forms of speculation;
Therefore, using the platform of gambling transactions makes your transaction illegal, and you will be legally liable.
This warning is very timely as the government of the Philippines is already starting to imposed stricter rules on crypto industry.