Octoprint multiple instances

What is the problem?
Hello i run two printers on one rasspbery pi3b a make two instances expampe one is and second, i forgot name and passpword for second instance octoprint, how reset name/password on second instance, when i try i reset only first .

What did you already try to solve it?

Logs (syslog, dmesg, ... no logs, no support)

Additional information about your network (Hardware you are trying to connect to, hardware you are trying to connect from, router, access point, used operating systems, ...)
i make it from this video:

can you still log in to the pi via ssh or console? are you following this? - I forgot my OctoPrint password, how can I reset it?

Yes i log via putty normaly and i follow this guide it works but reset password only on first instance for printer 1. second istance still want password.

Try this and change the paths accordingly.

i had no idea how