Hi.
Mikrotik 3.22 updated to 4.17
Problem is that my username and pass. is back to default (admin) by itself. I set it too something else and after 1-2 days it is back to default. It is PC based conf. with Hot-spot, proxy.
EDIT.
The problem is same on v. 3.x and v. 4.x
The license key format changed between those versions, from 7 digits to 8 digits. Did you upgrade your key?
If you didn’t you are running on a demo license and the router is resetting its configuration periodically.
License key is up to date… 