I found two mistakes and was able to solve those problems !

I found my DIN socket in back panel is upside down. Then I changed and wired it again.

I thought that the problem was settled in this and I switched on my OTS ...
But
green light on - clean sound
green light off - OD sound
red light on - boosted
red light off - non boosted
I opened the footswitch, and replaced Brown-wire with Yellow-wire from DIN cable to tarminal.

Thus it was settled entirely.
Jun