Hi,
Three days ago I bought a used EHX Cathedral from a guy on facebook.
The pedal came today and it doesn´t sound good.
Here is a video I made to show it to the guy that sold it to me:

Video of busted Cathedral

So far the seller doesn´t seem to be considering taking responsibility of having sent a broken pedal.
He says I should use a DI box for using line level signals. I´ve read many people on the internet saying they connect their synths directly to the pedal without any problem.
I´ve also tried connecting other stuff to it and with different levels, always with the same result.
I´m going to try to get my money back, but seeing the things the seller says it I see that is going to be difficult. (For example, he told me to show him a video of a synth going through this pedal, and when I sent him this video he said “oh yeah, that one is the Cathedral MKII” <<<--- WHAT??? ).
So, what I was saying, I´m probably going to be stuck with it since the police is not going to do anything about a 120€ fraud. So I came here to ask, has anyone seen this problem before? Is it easily fixable at some EHX service center?

BTW, the power supply I´m using is the one that came with the pedal, it is an EHX EU9.6DC-200, 9.6V – 200mA