Kalkan"Device limit reached"
Remove the old computer in your panel → My computers, then sign in again.
"Offline too long"
Kalkan works offline for 72 hours. Connect to the internet once and it renews itself.
A profile does not open
Run Settings → System test. Most problems are a Chrome update (Kalkan re-verifies it) or a proxy that is down.
SmartScreen warning
Choose "More info → Run anyway" if the publisher is shown as Kalkan.