What is the problem?
Can't login to Octoprint website or FTP.
What did you already try to solve it?
I tried that.... I'm still presented with a login username/password afterwards....
Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware, octoprint.log, serial.log or output on terminal tab, ...)
It was working with no issues the last time I used it.