"Could not connect to klei servers" or "unfortunately you failed to download your item collection"

[Striker_1751]

Don't know how to start right, but once i have connection problems but internet was good. 

Sometimes i have a problem "Could not connect to klei servers." when i try to login. If it doesn't show up and i login succesfull, then somethimes i can't get my item collection with problem "unfortunately you failed to download your item collection, would you like to try again". If all "ok", and i start play,  then when i go to caves or from caves game kick me away with another error message.

I have tried:
- reinstal game (with deleting Klei folder from my Documents)
- delete and unsubscribe all mods
- run game as administrator
- check windows firewall
- disable windows firewall

in log file i found this

CURL ERROR: (lobby-cdn.klei.com) [6]Could not resolve host: lobby-cdn.klei.com

and

CURL ERROR: (items.kleientertainment.com) [6]Could not resolve host: items.kleientertainment.com

Solution was very strange.
I could not get items.kleientertainment.com, so I try to ping it, but without succes. Then i add second DNS server 8.8.8.8 in my network configuration. After that ping was ok and game ok too. So if you have similar problem and still don't find solution, try to ping one of those sites, and if you can't do it, try to add second dns 8.8.8.8

[JJJoker]

This problem depends on the network operator's internal DNS hijacking, or a third-party DNS pollution attack.