Need help. PLDT provided a modem wifi in 1. Problem is their wifi signal is weak. I bought a cdr king wifi with repeater function.

Easy setup. Now problem is, i can connect thru the repeater but there is no internet access when using a smartphone, but with my laptop, i can connect with the repeater with internet access. What s wrong with my setup? I also noticed that if you access the wifi admin page thru the repeater, the admin page of the main wifi is displayed while if i access the admin page whike connected to the main wifi, the repeater admin page is displayed. Thanks for the help