On my B1
The password seems to have changed / stopped all by itself. Using saved passwords in the browser.
I reset the config to original and admin. That’s OK.
Then reload my saved config, which works But the password is not what it was saved or the revised admin. That reload should have worked but the reloaded Id / password in the config failed too.
What changed here? Is some certificate expired and replaced that encrypts the password. Or some hidden expiry time here?
Not happy.
Now I see the Problem. In Firefox, everytime I tab away from the System tab, the browser puts up the save password dialog. But thanks to a genius who designed the peplink webpage, its seeds the password field with a random junk, which the browser picks up as a changed pw and tries to save. Thanks peplink.
If your browser is trying to save passwords without your confirmation, the real genius is the one who wrote that feature in your browser 
Do you use IC2? If so, you can use that to manage your passwords programatically for all of your peplink devices.
No, its the web page. The page pre-fills the password edit boxes with phony place holder junk values. This is done every time we stop on the system tab. The browser is simply picking up on the changed values. But 99% of visit to the system tab, have no intention of changing passwords. The proper and correct action of the web page would be to NOT put junk values in the edit boxes and thereby telling the browser that the password has changed. Just leave the edit fields blank.
I Agree with you!
Blank is the ONLY value any developer/code should ever type into password field. Anything else will/did lead to issues.
35 Year retired Software Architect.