Subharmonicon swith issue

Hi,

Hi, sorry for that first post, but I’ve just received the subharmonicon.
Does someone had this problem with the SEQ1 swicth ? Once can not switch on, and at the reboot, can not switch off.
Is there any reset procedure ?

Video : https://odysee.com/@Rideric:d/20210217_181406:6

Thank you.

Eric.