Mikrotik hotspot cookies login doesn't work

Hello everybody!
I have a running hotspot system on x86 v.3.30. I have some problems with login by cookies. Before some time it works, but something happen and now every time I have to write my username and password to login. The hotspot configuration is set up to login http-chap, cookies and trial. The cookies exist in hotspot system and in iexplorer but doesn’t do anything! Any idea how to fix this problem ?

  1. Make sure the particular user has cookie at /ip hotspot cookie menu;
  2. Look at the log print, when user is logging in. Is there any information about cookie usage by the client?
  3. Maybe client is using different browser or other information was changed.

With 4.10 everything works fine