@Jhayvee Al Niño Velasquez Thanks for your patience on this.
Based on shared information, I have looked at the backend logs, I see that your subscription billing address is in Philippines (PH) and you are trying to acquire phone numbers in US(United states) and AE (United Arab Emirates) regions which is not allowed.
If you want to purchase the phone number in US region then your subscription billing need in any of the below listed countries.
Note: Billing country cannot be changed as mentioned in the documentation here.
Please refer to this public documentation, to know more about Country/regional availability of telephone numbers and subscription eligibility. As per the investigations PH billing address is not supported to purchase any phone number now.
The workaround or the solution is to create a new subscription accordingly in which country phone number you want to purchase.
Feel free to reach back to me if you have any further questions on this,