Hello i have some issue changing the subnet of openwrt. i have red this
my issue is somehwat similar, and unlike what it is said there, after config is not confirmed, roolback kick in as expected but does not complete
(And yes i did try various thing after waiting couple of minutes, such as restart / recreating the network link (plug / unplug ) etc.
and it reverted many restart/reboot with reset button (not sure it did anything as it kept old password).