Hire some help, character problem in PDF

I have a problem about PDF, i dont know how to use thai font, because the character output is square.
i will give 0.03 BTC for the peoson can help me.
Thank you

Can you send my the template that you are working on? I’ll take a look at it.

thank you, but i already fix it.

Excuse me,
If u have a template to sell, i am interested to buy.

Can you share how to add another pdf font?