Wireless Repeater

First of all Sorry For my bad English. what i want to do is to use Raspberrypi 3 running OSMC AS a wireless Repeater for downstairs.I manage to Create a Hotspot/Access point on Build-in wifi and used USB Wifi dongle to connect to my main AP. Now How to Route Packets From wlan1 to wlan0 or Create a Bridge network

IIRC someone else in here had the same idea but failed. I assume you searched.

I would be interested to know what you did already to create the ‘hotspot/AP’ and get the dongle to connect separately - presumably not using MyOSMC?

My Pi is a router from a mobile broadband device (wwan0) to my local network (eth0) but they are on different subnets. I don’t know how you could set up a bridge with both sides on the same subnet and same SSID. FWIW, these are the commands in my rclocal, while connman deals with the eth0 connection:

ip link set wwan0 up
dhclient wwan0
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o wwan0 -j MASQUERADE
ip route change default via dev wwan0

I did use MyOSMC First I create AP using Ethernet to Wifi option then use second Adapter to connect to my main AP

So what does connmanctl technologies say?