MT300N-v2 will not connect

I have updated the firmware of my MT300N-v2 with the latest (mt300n-v2/clean/lede-mt300n-v2-clean-2.264.bin) as I wasn’t able to connect vyprvpn, and now it won’t even connect, therefore I cannot login to identify the problem or put it right.

Can you give me some guidance as to where to start looking?

The clean firmware doesn’t have vpn. You need to flash back the stock firmware.

You can use uboot web failsafe. Overview - GL.iNet Docs