Install Pbox on GL-MT300A (GL.Inet) router

Hi all,
I'm trying to install piratebox on GL-MT300A Router https://www.gl-inet.com/mt300a/
It has an MTK 7620A chipset, Auto install not work, so i have started with a plain openwrt and try to install manually, but after adding the repository and lauched the command i have this output

opkg -d ext install extendRoot-piratebox
Installing extendRoot-piratebox (0.10.1-3) to ext...
Downloading [stable.openwrt.piratebox.de].
Collected errors:
 * satisfy_dependencies_for: Cannot satisfy the following dependencies for extendRoot-piratebox:
 * 	php5-mod-sqlite * 	radvd * 	php5-mod-http * 	php5-mod-sqlite * 
 * opkg_install_cmd: Cannot install package extendRoot-piratebox.

Did you have some ideas? I'm getting mad

I was trying to do the same thig and I came across this post: [www.gl-inet.com]

There is an .ipk file posted there for this model. I haven't tried it yet myself, but should work.