What is the problem?
After Update, Login fails on other Computers.
What did you already try to solve it?
Tried another password, did not help.
Have you tried running in safe mode and if so did it solve the issue?
serial.log or output on terminal tab at a minimum, browser error console if UI issue ... no logs, no support! Not log excerpts, complete logs.)
Additional information about your setup
OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible
made the first Login via iPhone.