Galaxy A9 Pro (A9100) Dual Sim Function is Flop

Hi guys Im from the Philippines. Bought a China-released and rooted Samsung A9 Pro recently. I drcided to get it because it is dual sim (even is the second sim slot is a hybrid one), dual LTE and its huge battery at 5000mAh. I unfortunately did not try the messaging function. I noticed that every time someone sends me an SMS i get 2 same messages (1 for each sims). Also, i get super delayed to no messages at all on the second sim. I notices this specially if i need to get an OTP from bank providers. Need help how to make the second sim function while having it work here in Manila. Any help will be greatly appreciated.