-Log-in to the iVMS-4200 and on the top right corner, select the Cloud Icon that says "Not Logged In." (see 1st snip below).

-Accept the pop-up window that says you will be entering Hik-connect.

-Then log-in with the Hik-connect username and password. (see 2nd snip below)

-To verify that the devices are added to the iVMS-4200 via Hik-connect, check the Connection Type column and verify that it says Cloud P2P and has an Online status. (see 3rd snip below)

1st snip below

2nd snip below

3rd snip below