phone -> WireGuard -> router -> internet (pihole DNS)

Hello!
Please help to set up access from the phone to the Internet via Pi-hole.
Why is it so difficult? )
I installed Pi-hole on the router, which perfectly cuts advertising.

Configuration
Mikrotik hap ac3
Home network 192.168.88.0/24
WireGuard client 192.168.13.2
Pi-hole 172.17.0.2
DNS 192.168.88.1 (NAT->172.17.0.2)
The router receives an external IP address

I installed wireguard on the phone and the router.
I see that the connection is taking place.
In the Pi-hole, I see records about blocking advertising from 192.168.13.2 (WireGuard client)
But the sites on the phone do not open, it is also not available Pi-hole admin (192.168.88.1:888/admin)

I looked through similar topics on the forum, saw a link to a huge description of WireGuard.
But that doesn’t help solve my question (

Here is my configuration

# apr/04/2023 01:26:59 by RouterOS 7.8

The issue is resolved ). The phone automatically extinguished the application WireGuard (