I think the 2.1 and 2.0 codes are offline, smea replaced them.
Could be your entry point if that's the only thing that's changed aside from hax being updated to 2.5 from 2.1.
If you're sure you haven't updated blarg, you could try themehax and see if that renders the same results.
While I'm not sure about where to find a working qr code for running 2.0 (unless somebody made an offline backup for every FW combination), alternatively you could try running ninjhax1.0 with the old boot file from this starter and a qr from the ninjhax
1.0 page and see if ninjhax1.0 works better for you.
ninjhax 1.0 starterpack
http://smealum.net/ninjhax/ = ninjahax1.x QR code not to be confused with the following link
https://smealum.github.io/ninjhax2/ = ninjahax2.5 QR code (Do not use this one if trying to run hax 1.0)
But you might see more obvious results from simply changing your entry point to themehax or themehax then CtrBootManager.