why my IAP button is not working

hi, I am using the codeless IAP button and category. but when I am testing it after submitting it to Internal testing on google play store it shows “the item you requested is not available for purchase”. Knowing that I used my template ID from the play store instead of setting the price in the category and the app is reading the price correctly but when I press the button it shows the message.
thank you

this photo shows that the value is read from the template correctly

and this is the error photo

Have you activated your item in the google play console?